Neuroendocrine carcinoma of the adrenal gland: A rare case report and literature review.

Neuroendocrine carcinoma (NEC) presence in the adrenal glands is rare. Neuroendocrine carcinoma manifests across a wide range of clinical presentations, from asymptomatic cases to those characterized by hormone overproduction or the tumor's mass effect. We report a 48-year-old male referred by a urology specialist with a chief complaint of right-sided back pain for the past 6 months accompanied by nausea, vomiting, and sharp stabbing headaches.