Introduction: Re-operative laparoscopic colorectal surgery is becoming increasingly common. It can be a challenging procedure, but its benefits can outweigh the associated risks. Methods: A systematic review of the literature reporting re-operative laparoscopic surgery was carried out. Retrospective and prospective cohort studies and case series were included, with case reports being excluded. Results: Seventeen articles dated from 2007 to 2020 were included in the systematic review. In total, 1555 patients were identified. Five hundred and seventy-four of them had a laparoscopic procedure and 981 an open re-operation. One hundred and eighty-three women had a laparoscopic operation. The median age ranged from to 44.9 years to 68.7 years. In seven studies, the indication of the index operation was malignancy, one study regarded re-laparoscopy for excision of lateral pelvic lymph nodes, and one study looked at redo surgery of ileal J pouch anal anastomosis. There were 16 mortalities in the laparoscopic arm (2.78%) and 93 (9.4%) in the open surgery arm. One hundred and thirty-seven morbidities were recorded in the open arm and 102 in the laparoscopic arm. Thirty-nine conversions to open occurred. The median length of stay ranged from 5.8 days to 19 days in laparoscopy and 9.7 to 34 days in the open surgery arm. Conclusions: Re-operative laparoscopic colorectal surgery is safe when performed by experienced hands. The management of complications, recurrence of malignancy, and lateral pelvic floor dissection can be safely performed. The complication rate is low, with conversion to open procedures being relatively uncommon.

Malignant melanoma is a rare malignancy of the skin with very high mortality rates. Distal metastases are common especially to other areas of the skin, subcutaneous tissues lungs or liver. There are no previously reported cases of skin melanoma metastasizing to the omentum. A 62 year-old white British man with a past medical history of a malignant melanoma of the skin underwent a laparotomy for a partially obstructing sigmoid tumour. Intra-operatively, a round, smooth textured black lesion was identified on the anterior surface of the omentum; the nodule was confirmed to be a metastatic malignant melanoma with abundant brown pigment and a focal necrotic area. A metastatic malignant melanoma was discovered incidentally on the omentum during a laparotomy for bowel obstruction. The significance of this is unclear but it is possible that the omentum may have played a protective role in limiting its spread systemically.

Angioleiomyomas are benign soft tissue tumors originating from the vascular wall. Although angioleiomyomas mainly occur in extremities, followed by head, neck, and trunk, they can also be found throughout the digestive system and especially in the oral cavity. Herein, the fourth case of a rectal angioleiomyoma in the English literature is reported and the clinicopathological features of digestive system angioleiomyomas were investigated. In contrast to their soft tissue counterparts, digestive system angioleiomyomas mainly affect males at a slightly younger age. Angioleiomyomas are mainly asymptomatic and only rarely elicit pain. Clinicians consider angioleiomyomas infrequently and instead include more common soft tissue or epithelial tumors in their differential diagnosis. To prevent angiomyolipoma misdiagnosis, pathologists should exercise caution when examining an angioleiomyoma composed of adipose tissue, smooth muscle, and blood vessels. Pathologists, radiologists, and surgeons should be aware that angioleiomyomas can occur in the digestive system.