En Bloc Laparoscopic Sigmoidectomy, Left Adnexectomy, Small Bowel Loop and Piece of Urinary Bladder Resection for Advanced Sigmoid Tumor

Petar A. Gribnev, MD; Petar A. Gribnev, MD; G. Todorov, MD, PhD; G. Velev, MD; G. Dapri, MD, FACS