Gastrointestinal stromal tumor of the excluded stomach after Roux-en-Y gastric bypass: A case report and literature review

Autor: Álvaro Antônio Bandeira Ferraz, Wagner A. Nascimento, Fernando Santa-Cruz, Henrique Coelho, Carlos Eduardo S. Macedo, Daniel Tenório Camelo Soares
Rok vydání: 2020
Předmět:
Zdroj: International Journal of Surgery Case Reports
ISSN: 2210-2612
DOI: 10.1016/j.ijscr.2020.08.026
Popis: Highlights • This is the second reported case of GIST post-RYGB. • GISTs generally present good prognosis after surgical resection. • The case reported after RYGB did not present the patient follow-up. • The case reported after gastric banding presented recurrence 3 years after resection.
Background Gastric cancer is an extremely rare condition to occur after bariatric surgery, and most of the reported cases are adenocarcinomas. Regarding gastrointestinal stromal tumors (GISTs), there are only two reported cases occurring after bariatric surgery (one after gastric banding and the other following Roux-en-Y gastric bypass (RYGB)). Case presentation A 48-year-old woman with previous history of obesity and type 2 diabetes, treated with a Roux-en-Y gastric bypass 2 years earlier, was referred to our center due to complains of diffuse abdominal pain and distension associated with asthenia. Magnetic resonance imaging showed a cystic-solid mass located in the right hypochondrium, measuring 19.5 × 13.5 × 16 cm, suggesting the diagnosis of a retroperitoneal tumor. Based on these findings, a laparotomy, evidencing that the larger cystic-solid tumor was originating from the excluded stomach post-RYGB. The gastrectomy of the excluded stomach was performed aside with a conventional cholecystectomy. Histopathology and immunohistochemistry confirmed to be a gastric GIST with epithelioid cells. Currently, 12 months after surgery, the patient presents no signs of recurrence. Conclusion This is the second case of gastric GIST occurring after RYGB to be reported in the literature.
Databáze: OpenAIRE