[A Case of Epithelial Cyst Occurring in Intrapancreatic Accessory Spleen]

Takuya Sakamoto, Yutaka Takeda, Yoshiaki Ohmura, Yoshiteru Katsura, Ayako Imada, Koki Takase, Keisuke Toya, Yoshirou Yukawa, Kenji Kawai, Kohei Murakami, Yoshinori Kagawa, Toru Masuzawa, Atsushi Takeno, Taishi Hata, Kohei Murata
Gan to Kagaku Ryoho. Cancer & Chemotherapy 2020, 47 (4): 673-675
Although accessory spleens are often found in clinical practice, it is rare to identify cystic disease in an intrapancreatic accessory spleen. Here, we report a case of an epithelial cyst that occurred in the intrapancreatic accessory spleen. The patient was a 54-year-old male. Liver dysfunction was identified by the primary care doctor, and abdominal CT showed a tumorous lesion in the pancreatic tail. The patient was then referred to our hospital. Contrast-enhanced CT revealed a multilocular cystic lesion in the pancreatic tail. In endoscopic ultrasound, there was no obvious solid tumor in the cyst. A cystic disease such as serous cystic neoplasm(SCN)or mucinous cystic neoplasm(MCN)was suspected, and we performed a laparoscopic distal pancreatectomy. Postoperative pathological examination revealed an accessory spleen in the tail of the pancreas. The identified epithelial cyst was present in this accessory spleen. An epithelial cyst that occurs in the intrasplenic accessory spleen is a rare disease, but it is necessary to keep in mind as a possible differential diagnosis.

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