Treatment of knee osteoarthritis with autologous mesenchymal stem cells: two-year follow-up results.

enough room for graft implantation or during closing the incision when one improper stitch can tear the peritoneum leading to a defect. Careful dissection should be performed in all cases, and if a peritoneal defect is found, it should be closed regardless of its size to avoid the occurrence of a PH. All in all, PH is a relatively uncommon but potentially fatal complication after renal transplantation, and its nonspecific symptoms may lead to misdiagnosis. Physician awareness, prompt diagnosis, and early surgical intervention are crucial. Additionally, meticulous surgical technique during transplantation may help avoid this complication. Demetrios Moris, MD Spiridon Vernadakis, MD, PhD, MSc, FEBS 1 1st Department of Surgery Athens University School of Medicine ‘‘Laikon’’, General Hospital Athens, Greece 2 Department of General, Visceral and Transplantation Surgery University Hospital Essen, Germany