LAUSR

Familial lentiginosis syndromes are characterized by a wide array of manifestations resulting from activation of molecular pathways which control growth, proliferation, and differentiation of a broad range of tissues. Familial gastrointestinal stromal tumors (GISTs) are often accompanied by additional features like hyperpigmentation, mastocytosis, and dysphagia. They have been described with mutations in c‐kit (most commonly), platelet‐derived growth factor receptor A, neurofibromatosis‐1, and succinate dehydrogenase genes.