Predictors of the presence of concomitant invasive ductal carcinoma in intraductal papillary mucinous neoplasm of the pancreas.

Objective: Invasive ductal carcinoma (DC) of the pancreas arising as an independent lesion in association with intraductal papillary mucinous neoplasm (IPMN) has occasionally been reported. However, clinicopathological features related to the presence of DC in patients with IPMN remain largely unknown. The purpose of the present study was to determine the factors predicting the presence of concomitant DC in those with IPMN.

Case report of rat true hermaphroditism: colocalization of oocytes and granulosa and sertoli cells in the germinal cord.

We describe a case of rat hermaphroditism with bilateral ovotestes. In a 7-week-old apparently male Sprague-Dawley rat, both testes were relatively small, and the right testis with a faint protrusion was somewhat round and small as compared with the left testis. Microscopically, the testes contained ovarian tissues within their tunica albugineas in conjunction with spermatogenesis in the seminiferous tubules.