Published online Nov 26, 2020. doi: 10.12998/wjcc.v8.i22.5816
Peer-review started: August 25, 2020
First decision: September 29, 2020
Revised: October 8, 2020
Accepted: October 26, 2020
Article in press: October 26, 2020
Published online: November 26, 2020
Processing time: 92 Days and 4.8 Hours
Intussusception rarely causes intestinal obstruction in adults. Metastatic malignant melanoma is the main cause of intussusception of the small intestine among adults. However, malignant melanoma rarely causes intussusception of the colorectum. Moreover, emergent surgery is usually performed for such cases. Here, we report a case of a patient with colocolonic intussusception caused by a malignant melanoma, for which endoscopic reduction and elective surgery were performed.
The patient was a 64-year-old woman who underwent multiple surgeries and received chemotherapy and immunotherapy for a malignant melanoma. During immunotherapy, she had abdominal pain, diarrhea, and bloody stool. Physical examination and laboratory studies did not reveal any findings that warranted emergent surgery. Computed tomography revealed intussusception in the descending colon without intestinal necrosis and perforation. Intussusception was reduced endoscopically, and elective surgery was performed.
This report suggests that endoscopic reduction and elective surgery constitute a treatment option for colocolonic intussusception of metastatic malignant melanomas.
Core Tip: Malignant melanoma rarely causes intussusception in the colorectum, and emergent surgery is usually performed. To the best of our knowledge, this is the first report of colocolonic intussusception caused by metastatic malignant melanoma treated with endoscopic reduction and elective surgery, which could be a feasible option.