RESUMO
Abstract: Gastrointestinal stromal tumor is rare digestive tract mesenchymal tumor, most often in the wall of the stomach. It is a benign neoplasm, but it can become malignant if not treated. We report a case of gastrointestinal stromal tumor that was discovered after abdominal ultrasonography during staging of a patient with primary cutaneous amelanotic melanoma. Mutation in the tyrosine kinase receptor could explain the development of two types of tumors in the same patient.
Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Cutâneas/diagnóstico , Melanoma Amelanótico/diagnóstico , Tumores do Estroma Gastrointestinal/diagnóstico , Neoplasias Gastrointestinais/diagnóstico , Neoplasias Primárias Múltiplas/diagnóstico , Biópsia , Imuno-Histoquímica , Tomografia por Raios XRESUMO
Proliferating pilomatricoma is proliferative, rare tumor variant of pilomatricoma. It is a benign neoplasm of hair matrix that can have potentially involve local recurrence. We report the case of a 60-year-old man who presented an asymptomatic nodule on the scalp. Histological exam demonstrated a basaloid epithelium at the periphery, filled with eosinophilic cornified material containing shadow cells. The tumor was excised and there was no evidence of recurrence one year later.
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