小野寺 博義¹, 金澤 義彦¹, 鈴木 裕¹, 小田和 浩一², 中村 雍志³

Hiroyoshi ONODERA¹, Yoshihiko KANAZAWA¹, Hiroshi SUZUKI¹, Koichi OTAWA², Yasushi NAKAMURA³

¹宮城県立成人病センター内科, ²宮城県立成人病センター放射線科, ³宮城県立成人病センター外科

¹Department of Internal Medicine, Miyagi Seijinbyo Center, ²Department of Radiology, Miyagi Seijinbyo Center, ³Department of Surgery, Miyagi Seijinbyo Center

キーワード : Pancreas, Fat infiltration, Ultrasound, CT

The patient was a 59–year–old female. She was referred to our hospital for further examination of a pancreatic tumor. Ultrasonography demonstrated the hyperechoic well–marginated round mass in the body of the pancreas. The size of the mass was 1 cm in diameter. CT scan also demonstrated a low density round mass which was not enhanced by the intravenous injection of contrast medium. The mass showed fat density. ERCP and angiography failed to reveal the mass. Distal pancreatectomy was performed. The mass was focal fat infiltration measuring 0.8 by 0.7 cm. The irregular–shaped pancreatic tissues remained in the adipose tissue.