Adenoma

Electron micrograph of parathyroid adenoma. An oncocytic (oxyphilic) cell with numerous mitochondria (lower right) and chief cells with attached cisternae of rough endoplasmic reticulum and diffuse glycogen are illustrated. Dense-core endosecretory granules are primarily located in the ectoplasm. (×9300) (Courtesy of Dr Robert E. Erlandon, Memorial Sloan-Kettering Cancer Center)

Electron micrograph of parathyroid adenoma. An oncocytic (oxyphilic) cell with numerous mitochondria (lower right) and chief cells with attached cisternae of rough endoplasmic reticulum and diffuse glycogen are illustrated. Dense-core endosecretory granules are primarily located in the ectoplasm. (×9300) (Courtesy of Dr Robert E. Erlandon, Memorial Sloan-Kettering Cancer Center)

Source: