Adrenal Gland Pheochromocytoma

Definition 1

A pheochromocytoma occurring in the adrenal gland (which is the typical site of pheochromocytomas). -- 2004 (NCI Thesaurus)

Definition 2

A benign or malignant neuroendocrine neoplasm of the sympathetic nervous system that secretes catecholamines. It arises from the chromaffin cells of the adrenal medulla. Clinical presentation includes headaches, palpitations, chest and abdominal pain, hypertension, fever, and tremor. Microscopically, a characteristic nesting (zellballen) growth pattern is usually seen. Other growth patterns including trabecular pattern may also be present. (NCI Thesaurus)

Definition 3

A neoplasm of the adrenal gland medulla, for which the malignancy status has not been established. (NCI Thesaurus/CDISC)

Definition 4

Tumor that forms in the center of the adrenal gland (gland located above the kidney) that causes it to make too much adrenaline. Pheochromocytomas are usually benign (not cancer) but can cause high blood pressure, pounding headaches, heart palpitations, flushing of the face, nausea, and vomiting. (NCI Dictionary)

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