胃肠道间质瘤是原发于胃肠道和腹部的间叶源性肿瘤，绝大多数存在c - Kit基因突变。

Gastrointestinal stromal tumors (GIST) is the most common mesenchymal tumors of the gastrointestinal tract. Activating mutations of KIT has been identified in the vast majority of GIST.

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大约10% - 25%的NF 1患者有腹部肿瘤，最常见的是神经源性的、神经内分泌的、间叶源性的、胚胎性的及其它。

Approximately 10% to 25% of patients with NF1 have abdominal tumors. The primary categories of abdominal tumors are neurogenic, neuroendocrine, mesenchymal, embryonal, and miscellaneous.

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