2023 Volume 72 Issue 2 Pages 287-293
Mesothelial cells were detected in urine sediments on the anastomose urinary tract and peritoneum. We report a case of urine leakage after robot-assisted laparoscopic radical prostatectomy (RARP) detected mesothelial cells in urine sediments. A seventy-year-old man was admitted to our hospital with a complaint of anorexia and nausea. His serum K, BUN, CRE, and CRP levels suddenly increased at the time of discharge, and ascites appeared. Oval cells were seen scattered or in small clusters, and cell-to-cell apposition was recognized at the points where cells are joined. Cells had nucleoli in mononuclei and multinuclei, but no hyperchromatin was seen in the nuclei. Therefore, we identified them as mesothelial cells on the basis of these findings. K, BUN, and CRE levels in ascites were higher than those in serum. The doctor in charge suspected an anastomotic leakage on the basis of his medical history and laboratory data. Immunocytochemically, the oval cells were positive for D2-40, so they were identified as mesothelial cells. Three days later, his laboratory data returned to normal with the use of an indwelling catheter in the urinary bladder. We were able to compare the K, BUN, and CRE levels in serum with those in ascites and identified mesothelial cells by immunostaining. In addition, the discussions with the doctor in charge went smoothly. We were able to make good use of the last case’s experience.
