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Rare Cancers

Adrenocortical Carcinoma

Affects approximately
About 1-2 per million people per year; approximately 600 new cases per year in the U.S.

Also known as: ACC, adrenal cortex cancer, adrenal cancer, adrenal gland cancer

Adrenocortical Carcinoma

About Adrenocortical Carcinoma

Adrenocortical carcinoma (ACC) is a rare endocrine malignancy arising from the cortex (outer layer) of the adrenal glands. The adrenal cortex produces steroid hormones essential for metabolism, blood pressure, and sexual development. ACC tumors may overproduce these hormones, causing Cushing syndrome (excess cortisol), virilization (excess androgens), feminization (excess estrogen), or hyperaldosteronism. About 50-60% of ACCs are hormonally active, which can lead to earlier diagnosis through hormonal symptoms. Non-functioning tumors are often found incidentally on imaging or when they become large enough to cause pain. Complete surgical resection is the only curative treatment and is the cornerstone of management. For unresectable or metastatic disease, mitotane (an adrenolytic drug that destroys adrenal tissue) combined with etoposide, doxorubicin, and cisplatin (EDP-M) is the standard systemic approach. Prognosis depends heavily on stage at diagnosis and completeness of surgical resection.

Common Symptoms

  • Rapid, unexplained weight gain (especially in the face and trunk)
  • Excess hair growth or deepening voice in women (from androgen overproduction)
  • High blood pressure resistant to medication
  • Muscle weakness and easy bruising
  • Abdominal pain or a palpable mass
  • Irregular menstrual periods or breast enlargement in men

Who It Affects

Has a bimodal age distribution: children under 5 and adults ages 40-50. Slightly more common in women. Associated with Li-Fraumeni syndrome (TP53 mutations), Beckwith-Wiedemann syndrome, and MEN1. Higher incidence in southern Brazil due to a founder TP53 mutation.

Getting Involved in Clinical Trials

Clinical trials are evaluating checkpoint immunotherapy, targeted agents, and combination strategies for advanced ACC. The Alliance for Clinical Trials in Oncology and ENSAT (European Network for the Study of Adrenal Tumors) coordinate international research efforts. Given the rarity of ACC, treatment at a high-volume center with endocrine surgery and oncology expertise is critical. Ask about molecular profiling of your tumor, as certain genomic features may predict response to emerging therapies. Mitotane levels should be carefully monitored. The ACC Alliance and other patient organizations can help connect you with specialist centers and ongoing trials.

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