Introduction: Gasless laparoscopy-assisted surgery has been utilized in many abdominal diseases, and it has been proved to be effective and efficient compared with conventional open surgery. The study was conducted to evaluate the efficacy of gasless laparoscopy-assisted surgery in management of intraabdominal/retroperitoneal tumor of unknown origin.
Methods: From June 2004 to April 2009, nine patients who underwent gasless laparoscopy-assisted surgery for intraabdominal/retroperitoneal tumor of unknown origin were recruited. Intraabdominal/retroperitoneal tumor of unknown origin was defined as (1) diagnosis of enlarged retroperitoneal lymph node; (2) evaluation of peritoneal or mesenteric lesion, or tumor of nondigestive systems; and (3) staging of intraabdominal malignancy.
Results: Four patients underwent gasless laparoscopy-assisted surgery for retroperitoneal enlarged lymph nodes, four for evaluation of intraabdominal lesion, and two for staging of the malignancy. Sufficient tissue was obtained from all patients, and the diagnosis was as follows: three lymphomas, three peritoneal carcinomatoses, two chronic imflammations, and one benign tumor.
Conclusions: Three purposes can be achieved: a familiar method for the surgeon compared with total laparoscopic surgery, easy accessibility for further oncological management, and intraoperative miniconversion for peritoneal examination. It is a safe and effective way to obtain tissue for pathology and feasible in case of necessary sequential tumor resection.