[A case of pleural extension of mucinous tumor with pseudomyxoma peritonei].

We report a case of pleural extension of mucinous tumor with pseudomyxoma peritonei. A 64-year-old man was diagnosed as pseudomyxoma peritonei according to the findings of abdominal CT scan and cytologic examination of the ascitic fluid. At laparotomy in November 2007, jelly-like ascites and a child-head size mutinous tumor involving the greater omentum, transverse colon, and ascending colon were found. Mucious nodules scattered on the undersurface of the right and left hemidiaphragms. In addition, transhiatal extension of mucinous tumors was also extended through the esophageal hiatus, suggesting that thoracic extension of pseudomyxoma peritonei. To avoid an excessive surgical stress, thracotomy was not performed. Cytoreduction surgery was conducted. Postoperative course was uneventful. Although systemic chemotherapy was performed after surgery, intra-abdominal tumor enlarged gradually. Cytoreduction surgery was performed again in September 2008. Thereafter, intra-abdomial tumor enlarged gradually and his physical condition deteriorated. He died 26 months after the first surgery.