Parathyroid adenoma

Parathyroid adenoma.
(A) External (top) and cross-section views (bottom) show a tan, fleshy tumor.
(B) The tumor consists of sheets of neoplastic chief cells and is separated from normal parenchyma by a thin capsule.

Reproduced with permission from: Rubin, R, Strayer, DS. Rubin's Pathology: Clinicopathologic Foundations of Medicine, Fifth Edition. Philadelphia: Lippincott Williams & Wilkins, 2008. Copyright © 2008 Lippincott Williams & Wilkins.

Graphic 55183 Version 3.0