NF1 and gastrointestinal stromal tumor: A subset of another 10 subjects had additional NF1‐related tumors (Figure 2), including neoplasms in female genital organs (n = 4), multiform glioblastoma (n = 1), breast cancer (n = 1), gastrointestinal stromal tumor (n = 1), pheochromocytoma (n = 1), ganglioneuroma, and prolactinoma (n = 1).