Oncocytic carcinoid of the lung.
The case of a 47-year-old man with an oncocytic variant of carcinoid of the lung is reported. Chest radiography disclosed a well-defined round mass in the left upper lobe of the lung. Contrast-enhanced CT demonstrated a homogeneously well-enhanced mass. The oncocytic variant of a typical carcinoid is a rare histological entity, which can be established only by the ultrastructural features of mitochondrial hyperplasia and membrane-bound electron dense granules. Therefore, the definite diagnosis of oncocytic carcinoid tumor necessitates ultrastructural observation.
Department of Radiology, Oita Medical University, Japan.
S
S
Matsumoto
T
T
Muranaka
K
K
Hanada
S
S
Takeo
D003528:Carcinoma, Adenoid Cystic / Q000000981:diagnostic imaging* / Q000648:ultrastructure; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000648:ultrastructure*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D014057:Tomography, X-Ray Computed