Table 1 Tumor types in differential diagnosis with GIST

• leiomyoma

   leiomyosarcoma (LMS)

• Schwannoma

   malignant peripheral nerve sheath tumor (MPNST)

   neurofibroma

• neuroendocrine tumor

   carcinoid

   carcinosarcoma

• fibromatosis or desmoid tumor

   solitary fibrous tumor

   inflammatory fibroid polyp

• angiosarcoma

   clear cell sarcoma

   liposarcoma

   synovial sarcoma

• malignant mesothelioma

• dedifferentiated carcinoma

   sarcomatoid carcinoma

• metastatic melanoma