A 51-year-old Japanese man underwent resection of a tumor in the splenic flexure of the colon, which proved to be squamous cell carcinoma. At the time of presentation, the liver was found to have multiple metastases. On the 39th postoperative day, the patient died of liver failure. An autopsy demonstrated metastatic nodules on the pleura and parenchyma of both lungs, as well as in the liver, but failed to show any other primary squamous cell carcinoma. We emphasize that a meticulous search to disprove adenosquamous carcinoma is mandatory before a diagnosis of squamous cell carcinoma of the colon can be confirmed.
The relationship between sphincter of Oddi pressure and the morphological structure of the sphincter was studied in eight dogs prepared with a duodenal cannula. Sphincter of Oddi manometry was performed in awake animals in three directions, ventral, left dorsal, and right dorsal, using a catheter with three radial side holes for recording at one level. The pressure in the ventral direction (26.6+/-1.06 mmHg) (mean+/-SEM) was significantly lower than that in the left and right dorsal directions (30.6+/-1.42 and 31.2+/-1.23 mmHg, respectively). This functional manometric difference in the three directions correlated closely with the morphological structure of the sphincter of Oddi; the sum of the thickness of the sphincter of Oddi muscle and duodenal proper muscle was greater on the dorsal than on the ventral side. To our knowledge, this is the first report of axial asymmetry in sphincter of Oddi pressure.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.