[A Patient with Small Intestinal Leiomyosarcoma and Intussusception Who Underwent Single Port Surgery].

Area of Science:

• Gastroenterology
• Surgical Oncology
• Pathology

Background:

• Intussusception in adults is uncommon and often associated with underlying pathology, such as tumors.
• Small intestinal leiomyosarcoma is a rare mesenchymal tumor requiring accurate diagnosis and surgical management.

Observation:

• A 33-year-old female presented with abdominal pain and vomiting, diagnosed with intussusception secondary to a small intestinal tumor.
• Contrast-enhanced CT confirmed intussusception with a suspected advanced small intestinal tumor.

Findings:

• Emergency surgery was performed using a single-port laparoscopic approach, which required conversion to open surgery for reduction via Hutchinson's procedure.
• Histological examination revealed a 40 mm tumor with spindle cells, negative for Kit and DOG1, and positive for α-SMA and desmin, consistent with leiomyosarcoma.
• Resection included adjacent lymph nodes due to significant swelling.

Implications:

• This report highlights the successful application of single-port surgery in managing complex cases of intussusception caused by rare small intestinal tumors.
• The case underscores the importance of prompt diagnosis and tailored surgical strategies for rare gastrointestinal malignancies.
• Accurate histological and immunohistochemical analysis is crucial for classifying and understanding the behavior of such rare tumors.