Coexistence of Gastrointestinal Stromal Tumors (GISTs) and Pheochromocytoma in Three Cases of Neurofibromatosis Type 1 (NF1) with a Review of the Literature

摘要

It is well known that neurofibromatosis type 1 (NF1) is uncommonly associated with pheochromocytoma development and also, to a larger extent, with gastrointestinal stromal tumors (GISTs). We herein document three cases with the rare condition of NF1 coexisting with GIST and pheochromocytoma, while one of them also has a composite tumor and another has papillary thyroid carcinoma.