title: Endothelial cyst of the adrenal gland associated with adrenocortical adenoma: preoperative images simulate carcinoma.
abstract: A 68-year-old woman was referred for characterization of a left adrenal incidentaloma. Endocrinological examinations indicated subclinical Cushing's syndrome, whereas the large volume (10 cm in diameter) and heterogeneous configuration of the tumor raised a strong suspicion of adrenal carcinoma. Hence, left adrenalectomy was performed. Histopathologically, this lesion was a thick hyaline-walled endothelial cyst, flanked with a compressed adrenocortical adenoma. The puzzling image resemblance of a variation of adrenal cyst to carcinoma necessitated histological examination for confirmative diagnosis. This is the first reported case of adrenal endothelial cyst associated with adrenocortical adenoma, the former of which alone is a rarity.
authors.affiliation: Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Japan. nigawara@cc.hirosaki-u.ac.jp
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nigawara
authors.forename: Satoru
authors.initials: S
authors.lastname: Sakihara
authors.forename: Kazunori
authors.initials: K
authors.lastname: Kageyama
authors.forename: Ken
authors.initials: K
authors.lastname: Terui
authors.forename: Shinobu
authors.initials: S
authors.lastname: Takayasu
authors.forename: Shingo
authors.initials: S
authors.lastname: Hatakeyama
authors.forename: Chikara
authors.initials: C
authors.lastname: Ohyama
authors.forename: Hironobu
authors.initials: H
authors.lastname: Sasano
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Suda
mesh_terms: D000306:Adrenal Cortex Neoplasms / Q000175:diagnosis*; D000311:Adrenal Glands / Q000473:pathology* / Q000601:surgery; D000315:Adrenalectomy; D018246:Adrenocortical Adenoma / Q000175:diagnosis*; D000368:Aged; D003560:Cysts / Q000000981:diagnostic imaging* / Q000473:pathology*; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D033162:Incidental Findings; D007457:Iodine Radioisotopes; D008279:Magnetic Resonance Imaging; D011877:Radionuclide Imaging; D014057:Tomography, X-Ray Computed
chemical_list: D007457:Iodine Radioisotopes