[Hepatic and Pancreatic Metastases of a Rectal Gastrointestinal Stromal Tumor in a Patient with Long-Term Survival following Combined Therapy-ACase Report].
2019
: A 68-year-old woman underwent Miles' surgery with a diagnosis of a rectalgastrointestinalstromaltumor (GIST)in 2004. In 2005 and 2006, she developed liver metastases that were surgically removed, but once again in June 2006, she presented with liver metastasis, and imatinib therapy(400mg/day)was administered. In October 2016, she was diagnosed with progression of liver metastasis, and a tumor in the pancreatic body was identified on a CT scan. The patient was referred to our institution for treatment. We performed right hepatectomy and distalpancreatectomy in January 2017. Immunohistochemically, the recurrent tumor was positive for c-kit and CD34, and the diagnosis of GIST was confirmed. The pathological diagno- sis was a high-risk GIST showing 43mitoses per 50 high-power fields. Imatinib therapy(400mg/day)was administered after surgery. She is currently alive without recurrence.
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