Laparoscopic treatment of colonic endometriosis causing periodic abdominal pain and hematochezia: A case report.

RATIONALE: Endometriosis, a benign disease, has a malignant biological behavior and is highly prone to recurrence. Although gastrointestinal involvement is the most common site for extra-genital endometriosis, deep infiltrative endometriosis, which affects the mucosal layer, is very rare. PATIENT CONCERNS: A 44-year-old woman with a 6-month history of recurring abdominal pain and Hematochezia. The patient visited several hospitals over the past six months and was suspected to have been diagnosed with a digestive disease, for which medication was ineffective, leading to a great deal of anxiety. DIAGNOSES: Colonic endometriosis. INTERVENTIONS: After a thorough imaging evaluation and preoperative discussion, laparoscopic colonic endometriosis resection under indocyanine green indication was performed by gynecologists and gastroenterologists. OUTCOMES: After laparoscopic treatment, the patient's symptoms improved significantly, with occasional pain felt and no blood in the stool. LESSONS: This case provides a rare example of sigmoid endometriosis causing periodic abdominal pain and Hematochezia. We report a clinical case to investigate the feasibility of an indocyanine green fluorescent contrast technique to guide the scope of surgery in laparoscopic deep infiltrative endometriosis surgery. In intestinal endometriosis surgery, indocyanine green fluoroscopy may indicate the lesion's precise localization.