6 Early Common Signs of Adrenal Cancer To Know

Adrenal cancer is a rare but serious form of cancer that develops in the adrenal glands, which are small organs located above each kidney responsible for producing hormones that regulate metabolism, blood pressure, and stress response. Early detection of adrenal cancer is challenging because initial symptoms are often subtle or resemble other medical conditions. However, recognizing early warning signs is crucial for timely diagnosis, effective treatment, and improving overall prognosis.

Symptoms may result from hormone overproduction or the physical presence of a tumor in the adrenal gland. These can include unexplained weight changes, high blood pressure, hormonal imbalances, abdominal pain, or fatigue. Identifying these signs early allows healthcare providers to order appropriate imaging, lab tests, and specialist consultations. In this article, we will explore six common early signs of adrenal cancer, helping readers understand what to watch for and when to seek medical attention.

What is Adrenal Cancer?

Adrenal cancer, medically known as adrenocortical carcinoma (ACC), is a rare and aggressive malignancy that originates in the adrenal cortex, which is the outer layer of the adrenal glands. These two small, triangle-shaped glands are positioned on top of each kidney and function as essential components of the body’s endocrine system. While an adrenal tumor can also form in the inner part of the gland, known as the medulla, those are typically categorized as different types of tumors, such as pheochromocytomas.

Adrenocortical carcinoma specifically refers to a malignant growth within the cortex. Because this disease is exceptionally rare—affecting only about one to two people per million annually—it can be challenging to diagnose, as the initial adrenal tumor symptoms often mimic those of much more common medical conditions. Distinguishing between a benign adrenal adenoma and a malignant adrenal carcinoma is critical and requires careful evaluation by a team of specialists.

The Primary Function of the Adrenal Glands

The primary function of these glands is to produce and release a variety of essential hormones that regulate critical bodily processes, including metabolism, immune system response, blood pressure, and the body’s reaction to stress. Each gland is composed of two distinct parts: the outer cortex and the inner medulla, each with its own hormonal responsibilities.

The adrenal cortex is responsible for producing three main types of steroid hormones:

Glucocorticoids: Cortisol, often called the “stress hormone,” plays a crucial role in regulating the metabolism of fats, proteins, and carbohydrates. It also suppresses inflammation, regulates blood pressure, increases blood sugar, and controls the sleep-wake cycle.

Mineralocorticoids: Primarily aldosterone, which manages the balance of water and electrolytes, such as sodium and potassium. This balance is fundamental for maintaining stable blood pressure.

Androgens: The adrenal cortex produces small amounts of sex hormones, such as dehydroepiandrosterone (DHEA), which are converted into testosterone and estrogen in other parts of the body to support secondary sexual characteristics.

Meanwhile, the inner adrenal medulla produces catecholamines, such as epinephrine (adrenaline) and norepinephrine, which are key to driving the body’s “fight or flight” response.

How Cancer Disrupts Adrenal Function

A tumor on the adrenal gland disrupts normal bodily processes in one of two ways. The growth is classified based on its hormonal activity, acting either as a “functioning” tumor that actively secretes excess hormones, or a “non-functioning” tumor that does not produce hormones but grows large enough to cause physical problems.

                          [ADRENAL TUMOR TYPES]
                                    │
         ┌──────────────────────────┴──────────────────────────┐
         ▼                                                     ▼
 [FUNCTIONING TUMOR (~60%)]                           [NON-FUNCTIONING TUMOR]
• Unregulated, excess hormones.                       • No hormone secretion.
• Cortisol ──► Cushing's syndrome.                    • Grows large ("mass effect").
• Aldosterone ──► Conn's syndrome.                    • Compresses stomach, kidneys, liver.
• Androgens ──► Virilization / precocious puberty.    • Causes back/abdominal pain & fullness.

Approximately 60% of cases involve functioning tumors. In these instances, the cancerous cells in the cortex produce hormones in an unregulated, excessive manner, and the specific adrenal tumors symptoms depend entirely on which hormone is being overproduced.

An overproduction of cortisol leads to Cushing’s syndrome, which causes weight gain, high blood sugar, and high blood pressure. If the tumor secretes excess aldosterone, it can cause Conn’s syndrome, leading to severe hypertension and dangerously low potassium levels. Overproduction of androgens can result in virilization, causing women to develop male characteristics like excess body hair and a deeper voice, or triggering precocious puberty in children.

In contrast, non-functioning tumors do not secrete hormones. Instead, they cause distinct adrenal cancer symptoms as they expand in size, a phenomenon known as the “mass effect”. As a mass on the adrenal gland grows, it begins to press on nearby structures like the stomach, kidneys, liver, or intestines. This physical compression can lead to localized adrenal nodule symptoms, such as abdominal pain, back pain, a palpable lump in the abdomen, or a persistent feeling of fullness that frequently leads to changes in appetite and unintentional weight loss.

6 Telltale Symptoms of Adrenal Cancer

The 6 telltale symptoms of adrenal cancer are unexplained weight gain, high blood pressure and muscle weakness, hormonal changes like excess hair growth, abdominal or back pain, a feeling of abdominal fullness, and changes in appetite. These signs can be broadly categorized into two groups: those caused by the overproduction of hormones by a “functioning” tumor and those resulting from the physical size and pressure of a “non-functioning” tumor.

Because the adrenal glands produce several different hormones, the specific presentations can vary widely from person to person. A single symptom may not be a cause for alarm, but a combination of several persistent signs warrants immediate medical attention to determine if the cause is an adrenal carcinoma.

Hormonal Symptoms (Functioning Adrenal Tumors)

These signs are often the first indication of a functioning adrenal gland cancer. They occur when the cancerous cells produce hormones in an unregulated and excessive manner.

Unexplained Weight Gain (High Cortisol)

This is one of the most classic adrenal tumor symptoms, stemming from an overabundance of the hormone cortisol. The weight gain is typically centralized, meaning it primarily affects the abdomen, upper back, face, and neck, while the limbs may remain slim due to muscle wasting. This specific fat deposition pattern can result in a round “moon face” and a fatty “buffalo hump” between the shoulders. Other cortisol-driven adrenal cancer symptoms include purplish stretch marks (striae) on the abdomen, high blood sugar, easy bruising, and psychological shifts like severe anxiety or irritability.

High Blood Pressure and Muscle Weakness (High Aldosterone)

When a tumor causes an overproduction of aldosterone, it signals the kidneys to abnormally retain sodium and water while excreting potassium. The resulting increase in blood volume drives blood pressure up to levels that are highly resistant to standard medications. Simultaneously, the corresponding loss of potassium disrupts normal nerve and muscle function. This fluid and chemical imbalance triggers profound muscle weakness, cramping, persistent fatigue, and heart palpitations.

Distinct Hormonal Changes (High Androgens or Estrogens)

An overproduction of sex hormones triggers dramatic physical alterations that differ based on age and biological sex:

In Women: Excess androgens (male hormones) can cause hirsutism, which is the growth of coarse, dark hair on the face, chest, and back. It can also lead to severe acne, a deepening of the voice, male-pattern baldness, and irregular or completely absent menstrual periods.

In Men: The adrenal tumor is more likely to secrete excess estrogen, which can manifest as gynecomastia (breast enlargement) and a markedly decreased libido.

In Children: Excess sex hormones trigger precocious puberty. This leads to rapid growth spurts and early development of pubic hair, alongside an enlarged penis in boys, or early breast development and menstruation in girls.

Pressure-Related Symptoms (Non-Functioning Adrenal Tumors)

These symptoms are characteristic of non-functioning tumors or functioning tumors that have grown very large. Because the adrenal glands are located deep within the abdominal cavity, a tumor on the adrenal gland often has to reach a significant size before producing these “mass effect” symptoms.

Abdominal or Back Pain

As a mass on the adrenal gland expands, it begins to press on, stretch, or invade surrounding tissues, nerves, and organs. This discomfort is typically described as a dull, persistent ache rather than a sharp, acute pain. It is usually felt in the upper abdomen or the flank area (the side of the body between the ribs and the hip), frequently radiating to the back on the side of the body where the malignancy is located. Because this ache is vague at first, it is easily mistaken for a simple muscle strain or kidney issues.

A Feeling of Fullness or a Noticeable Abdominal Lump

When a growth becomes large enough, it creates a persistent sense of bloating or abdominal fullness that is entirely unrelated to eating. This occurs because the physical mass is actively taking up space and displacing neighboring organs. In thinner individuals, a highly advanced adrenal gland tumor can grow so large that it can eventually be felt as a hard lump or mass when pressing on the abdomen.

Changes in Appetite or Feeling Full Quickly

Known clinically as early satiety, these adrenal tumors symptoms occur when the physical mass pushes directly against the stomach. This external pressure mechanically restricts the stomach’s capacity to expand when food enters, tricking the brain into feeling entirely full after only a few bites of a meal.

This localized adrenal nodule symptoms profile often results in a significant drop in food intake and rapid, unintentional weight loss. This is an critical diagnostic red flag, as unexpected weight loss stands in sharp, direct contrast to the centralized weight gain generated by cortisol-secreting tumors.

Primary Causes and Risk Factors for Adrenal Cancer

The primary cause of most adrenal cancer cases remains unknown. In the vast majority of instances, adrenal carcinoma is considered “sporadic,” meaning it arises from random, spontaneous genetic mutations that occur in the adrenal cells during a person’s lifetime without any identifiable inherited risk factor. Researchers are still working to map out the specific molecular pathways that trigger these sporadic mutations.

Unlike many other malignancies, there are currently no well-established lifestyle or environmental risk factors—such as smoking, chemical exposures, or specific diets—that have been definitively linked to an increased risk of developing an adrenal gland cancer. Because of this, medical and genetic research focuses heavily on a small fraction of cases that are directly tied to rare, inherited genetic syndromes.

Genetic Conditions and Adrenal Cancer Risk

A small but significant percentage of cases are driven by inherited genetic syndromes. These conditions are caused by inherited mutations in specific genes that are critical for regulating cell growth and preventing tumor formation. Individuals who carry these mutations face a much higher lifetime risk of developing an adrenal tumor, alongside other malignancies.

Li-Fraumeni Syndrome (LFS)

Li-Fraumeni syndrome is a rare genetic disorder caused by an inherited mutation in the TP53 gene, a powerful tumor suppressor widely known as the “guardian of the genome”. Individuals with LFS carry a profoundly elevated risk of developing a wide array of malignancies at a young age. Adrenal cancer is considered one of the definitive hallmark conditions of this syndrome, and it is frequently identified in affected children.

Beckwith-Wiedemann Syndrome (BWS)

Beckwith-Wiedemann syndrome is a congenital overgrowth disorder that primarily increases the risk of childhood malignancies. Children diagnosed with BWS are highly susceptible to developing specific tumors, most notably Wilms tumor (a type of kidney cancer), hepatoblastoma (liver cancer), and malignant adrenal carcinoma.

Multiple Endocrine Neoplasia Type 1 (MEN1)

MEN1 is an inherited disorder that causes synchronized tumor growth across various glands within the endocrine system. While it most commonly affects the parathyroid glands, pituitary gland, and pancreas, it also impacts the adrenal cortex. Although a majority of the growths found in MEN1 patients manifest as a benign adrenal tumor, the baseline risk for developing a malignant carcinoma remains elevated.

Familial Adenomatous Polyposis (FAP)

Primarily recognized for causing hundreds of precancerous polyps in the colon—carrying a near-100% lifetime risk of colorectal cancer if left untreated—FAP is also linked to extra-colonic manifestations. Individuals with FAP face a slightly increased risk of developing subsequent tumors throughout the body, including a mass on the adrenal gland.

Sporadic vs. Hereditary Baseline Risk

Distinguishing between sporadic and hereditary cases is critical for understanding personal and familial risk. A disease is only classified as truly hereditary when a specific, harmful genetic mutation is directly passed from a parent to a child, conferring a high probability of developing the condition.

                 [ADRENAL CANCER CASES]
                           │
       ┌───────────────────┴───────────────────┐
       ▼                                       ▼
  [SPORADIC CASES]                       [HEREDITARY CASES]
   (90% - 95%)                             (5% - 10%)
• Spontaneous mutations.               • Inherited syndrome genes.
• Occurs after birth.                  • Passed from parent to child.
• Limited to adrenal cells.            • Present in all cells.
• No risk to family members.           • Relatives may need testing.

In the context of adrenal gland cancer, hereditary cases account for only about 5% to 10% of all recorded diagnoses. When a patient with a confirmed hereditary syndrome develops a tumor on the adrenal gland, their first-degree biological relatives (children, siblings, and parents) face a high probability of carrying the same mutation. These families typically benefit from genetic counseling and regular clinical screening to look for early adrenal cancer symptoms or related growths.

Conversely, for the remaining 90% to 95% of individuals diagnosed, the disease is entirely sporadic. In these instances, the cancer develops due to random genetic mutations that occur strictly within the adrenal gland cells long after birth. Because these altered genes are completely absent from the individual’s reproductive cells (sperm or egg), they cannot be passed down to future generations. For sporadic cases, an isolated diagnosis does not signify an increased medical risk for other family members.

When Should You See a Doctor for Potential Adrenal Cancer Symptoms?

You should see a doctor for potential adrenal cancer symptoms if you experience a persistent and unexplained combination of signs, especially rapid weight gain in the torso and face, new-onset high blood pressure, noticeable hormonal changes, and continuous abdominal or back pain. While any one of these signs can be caused by a variety of common, less serious conditions, their concurrent appearance is a significant warning sign that warrants a thorough medical evaluation.

It is particularly important to seek attention if the symptoms are worsening over time or are not responding to initial treatments for more common ailments. For example, high blood pressure that remains elevated despite medication, or muscle weakness experienced alongside it, serves as a major red flag. Similarly, if a woman develops facial hair and irregular periods, or a child shows signs of puberty at an unusually early age, a prompt consultation is essential. Proactive investigation by a healthcare professional is key to identifying the root cause of these complex changes.

What Type of Specialist Diagnoses and Treats Adrenal Cancer?

Because this disease involves both hormonal dysfunction and cancerous growth, a multidisciplinary team of specialists is required to diagnose and treat an adrenal carcinoma. This collaborative team is typically anchored by two primary specialists:

Endocrinologist: A physician who specializes in hormone-related diseases. The endocrinologist is crucial for the initial diagnosis, ordering and interpreting the specific blood and urine tests needed to determine if the adrenal gland cancer is a functioning tumor. They also manage hormonal imbalances before and after treatment, including coordinating hormone replacement therapy if an adrenal gland is surgically removed.

Surgical Oncologist: A surgeon with specialized training in treating cancer. Surgery to remove the tumor (an adrenalectomy) is the primary and most effective treatment for localized adrenal cancer. The success of this complex procedure heavily depends on the surgeon’s direct experience with adrenal masses.

Other key members of the treatment team include a medical oncologist (to manage chemotherapy or systemic therapies if the cancer has spread), a radiation oncologist, a radiologist (to interpret diagnostic scans), and a pathologist who examines the tumor tissue under a microscope to confirm the diagnosis.

What Can You Expect During an Initial Medical Evaluation?

The initial evaluation for a suspected adrenal tumor is comprehensive and designed to map out both the structural and hormonal impacts of the growth. The process moves through distinct diagnostic phases:

Clinical Interview and Physical Examination

The evaluation begins with an in-depth review of your symptoms, their progression, and your personal and family medical history regarding endocrine disorders. During the physical exam, the doctor will check your blood pressure, heart rate, and weight.

They will actively look for physical signs associated with an active adrenal gland tumor, such as a rounded face (“moon facies”), a fatty deposit on the upper back (“buffalo hump”), excess body hair, purplish stretch marks, or muscle wasting in the limbs. The physician may also gently palpate your abdomen to check for a palpable mass on the adrenal gland or localized tenderness.

Advanced Laboratory Testing

Following the physical exam, laboratory testing is used to evaluate your hormone production. This phase typically includes:

• Blood Tests: Drawn to measure precise levels of cortisol, aldosterone, potassium, and sex hormones.
• 24-Hour Urine Collection: A standard practice where you collect your urine over a full day. This provides a highly accurate measurement of the total amount of hormones and their breakdown metabolites produced by the body over an entire diurnal cycle.

Diagnostic Imaging

If your laboratory blood or urine tests reveal abnormally high hormone levels or other suspicious metabolic findings, your doctor will immediately order imaging studies. A CT scan or an MRI of the abdomen will be scheduled to provide a detailed, high-resolution look at the tissue structure, confirm the presence of a tumor on the adrenal gland, and evaluate its size and characteristics.

Key Differences Between Adrenal Tumor Types and Diagnostic Methods

The key differences between adrenal tumor types involve their hormonal activity, malignant potential, and growth characteristics. Clinicians evaluate these traits using a combination of specific imaging scans, hormonal tests, and a formal staging system to accurately diagnose the condition and develop an effective treatment plan.

Functioning vs. Non-Functioning Adrenal Tumors

The primary distinction between functioning and non-functioning adrenal tumors lies in their ability to produce hormones, which directly alters how they impact the body and how they are medically discovered.

Hormone Production

Functioning tumors, also known as hormonally active tumors, continuously overproduce one or more of the hormones normally manufactured by the adrenal glands. In contrast, a non-functioning tumor is hormonally silent, meaning it does not synthesize or secrete any excess hormones.

Symptom Origin

Functioning Tumors: Symptoms are a direct systemic result of the severe hormonal imbalances they create. For example, a tumor secreting excess cortisol triggers Cushing’s syndrome (weight gain, high blood pressure, and muscle weakness), while a tumor secreting excess aldosterone triggers Conn’s syndrome (severe hypertension and dangerously low potassium levels).

Non-Functioning Tumors: Symptoms are entirely mechanical in nature, arising solely from the tumor’s physical size and the pressure it exerts on adjacent structures. These tumors are typically completely unnoticeable until they grow large enough to compress nearby organs like the stomach or kidneys, resulting in localized abdominal pain, back pain, or a persistent feeling of fullness.

Method of Discovery

Because functioning tumors generate clear clinical signs of hormone excess, they prompt targeted diagnostic testing and are often detected via specialized blood and urine tests that reveal hormonal imbalances. Conversely, non-functioning tumors are frequently found completely by chance during abdominal imaging procedures performed for entirely unrelated medical issues—earning them the clinical name “incidentalomas”.

Adrenal Cancer vs. Benign Adrenal Adenoma

Differentiating between malignant adrenal cancer (adrenocortical carcinoma) and a benign adrenal adenoma is the most critical step in an evaluation, as it dictates the patient’s entire prognosis and survival strategy.

Malignancy and Potential to Spread

Adrenocortical carcinoma is a rare but highly aggressive cancer with the innate ability to directly invade nearby tissues and metastasize (spread) to distant organs, most commonly the lungs, liver, and bones. On the other hand, an adrenal adenoma is a completely non-cancerous growth that remains strictly confined to the adrenal gland and cannot spread to other parts of the body. While adenomas are far more common and usually non-functioning, a subset can produce excess hormones, but they remain strictly benign even when hormonally active.

Size and Imaging Appearance

Physical size and visual appearance on medical scans serve as primary diagnostic indicators:

Adrenocortical Carcinomas: These malignant tumors tend to grow rapidly and are typically much larger at the time of diagnosis, often exceeding 4 to 6 centimeters in diameter. On a CT or MRI scan, they appear non-uniform and irregular, frequently showing visible internal areas of necrosis (cell death), hemorrhage (bleeding), or signs of invading surrounding organs.

Adrenal Adenomas: These benign growths generally grow very slowly, if at all, and are usually much smaller. On diagnostic imaging, they characteristically present as smooth, well-defined, uniform, and perfectly circular masses.

The Stages of Adrenal Cancer

The staging of adrenal cancer describes the physical extent of the cancer’s growth and spread within the body. Determining the exact stage is essential for establishing a prognosis and tailoring an effective treatment plan, such as choosing between localized surgery or systemic chemotherapy. The medical community primarily uses the TNM (Tumor, Node, Metastasis) system, which categorizes the progression of an adrenal carcinoma into four distinct stages.

Stage I and Stage II: Localized Disease

Stage I represents the earliest, most localized phase of adrenal gland cancer. At this point, the adrenal tumor is 5 centimeters or smaller in diameter and is completely confined within the outer layers of the adrenal gland. The malignancy has not yet spread to any nearby lymph nodes or distant organs.

Stage II indicates that the disease remains localized but shows significant structural growth. The tumor on the adrenal gland has grown larger than 5 centimeters in diameter. Despite this increased size, the cancer remains entirely contained within the adrenal gland tissue, with no spread to nearby lymph nodes or other parts of the body.

Stage III and Stage IV: Advanced and Metastatic Disease

Stage III indicates that the adrenal gland tumor has broken past its original boundaries and is affecting nearby structures. The primary mass can be of any size. The cancer has progressed in one of two ways: it has either spread into nearby lymph nodes, or it has physically grown outside of the adrenal gland to invade adjacent organs and tissues, such as the kidney, spleen, or major blood vessels. However, it has not yet traveled to distant areas of the body.

Stage IV is the most advanced and aggressive stage of adrenal cancer. The primary mass on the adrenal gland can be of any size. The cancer has officially metastasized, meaning malignant cells have broken away, entered the bloodstream or lymphatic system, and established new tumors in distant parts of the body. The most common sites for distant metastasis in this stage include the lungs, liver, and bones.

Conclusion

While adrenal cancer is rare, early recognition of its signs can significantly improve outcomes. Symptoms such as unexplained weight gain or loss, abdominal discomfort, changes in blood pressure, hormonal symptoms, fatigue, and unusual hair growth should prompt medical evaluation. Early diagnosis allows for timely surgical intervention, chemotherapy, or other targeted therapies to manage the disease effectively.

Maintaining regular checkups, paying attention to bodily changes, and seeking medical advice promptly are essential for anyone at risk. Awareness of early adrenal cancer symptoms, combined with proactive healthcare measures, can improve treatment success, prevent complications, and support overall long-term health.

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FAQ

What is adrenal cancer?

Adrenal cancer is a rare malignancy that forms in the adrenal glands, located above the kidneys. These glands produce hormones like cortisol, aldosterone, and adrenaline that regulate metabolism, blood pressure, and stress responses. Tumors can be functional (hormone-secreting) or non-functional, with functional tumors often causing early hormonal symptoms.

What are the early signs of adrenal cancer?

Early symptoms may include unexplained weight gain or loss, abdominal or back pain, high blood pressure, hormonal imbalances, fatigue, and changes in hair growth. Some tumors may remain asymptomatic until they grow large enough to cause discomfort. Functional tumors may lead to Cushing’s syndrome or virilization, depending on the type of hormone produced.

How is adrenal cancer diagnosed?

Diagnosis involves a combination of physical examination, blood and urine hormone tests, imaging studies like CT or MRI, and sometimes biopsy. Blood tests assess hormone levels, while imaging detects tumor size, location, and potential spread. Early detection is critical for effective treatment and improving survival rates.

Who is at higher risk for adrenal cancer?

Risk factors include genetic syndromes (such as Li-Fraumeni syndrome), family history of adrenal or endocrine tumors, and certain inherited cancer predispositions. While the cancer can occur in any age group, it is slightly more common in adults and may present differently depending on hormone activity.

What treatments are available for adrenal cancer?

Treatment options depend on tumor size, stage, and hormone activity. Surgical removal of the adrenal gland (adrenalectomy) is the most common approach, often followed by chemotherapy, mitotane therapy, or radiation in advanced cases. Hormonal symptoms may also be managed medically to improve quality of life.

Can adrenal cancer be prevented?

There is no guaranteed way to prevent adrenal cancer due to its rarity and genetic associations. However, regular medical checkups, monitoring hormone levels if at risk, and prompt evaluation of unusual symptoms can help detect the disease early. Awareness of family history and genetic counseling may also assist high-risk individuals in monitoring for early signs.

Sources

• Mayo Clinic – Adrenal Cancer
• American Cancer Society – Adrenal Cancer
• National Cancer Institute (NCI) – Adrenal Cancer
• Cleveland Clinic – Adrenal Cancer Overview
• WebMD – Adrenal Cancer Symptoms and Treatment