# Robot-Assisted Sigmoidectomy in a Patient With Situs Inversus Totalis: A Case Report

## TL;DR

A rare case of robot-assisted surgery for colon cancer is reported in a patient with reversed internal organs.

## Contribution

This is one of the few reported cases of robot-assisted sigmoidectomy in a patient with situs inversus totalis.

## Key findings

- Robot-assisted surgery was successfully performed in a patient with situs inversus totalis.
- Modified port placement was used to accommodate the mirrored anatomy during the procedure.
- The patient was discharged without complications following the surgery.

## Abstract

Situs inversus totalis (SIT) is a rare congenital anomaly characterized by a complete mirror-image transposition of thoracic and abdominal organs. Surgery in such patients is technically challenging because of the reversed anatomy, and only a few cases of robot-assisted surgery (RS) for colon cancer in SIT have been reported. We report a rare case of robot-assisted sigmoidectomy with radical lymph node dissection for sigmoid colon cancer in a 31-year-old woman with SIT. The patient presented with abdominal pain and hematochezia, and was diagnosed with sigmoid colon cancer at a previous hospital. Further examination at our institution confirmed SIT, and a robot-assisted sigmoidectomy was successfully performed with modified port placement to accommodate the mirrored anatomy. The procedure was completed safely, and the patient was discharged without complications. RS can be a safe and effective approach for patients with anatomical anomalies such as SIT.