RESUMO
Plexiform neurofibroma is a rare benign tumor of the peripheral nerves involving the conjunctiva cells of the perineurium. It is pathognomonic of neurofibromatosis type1 (NF1 or Von Recklinghausen disease). MRI is a great help in the diagnosis of this pathology. Anatomopathological confirmation is sometimes necessary, in particular in patients with no signs of NF1. We here report the case of a little girl with cervical plexiform neurofibroma revealing neurofibromatosis type 1.
Assuntos
Neoplasias de Cabeça e Pescoço/diagnóstico , Neurofibroma Plexiforme/diagnóstico , Neurofibromatose 1/diagnóstico , Criança , Feminino , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Imageamento por Ressonância Magnética/métodos , Neurofibroma Plexiforme/patologia , Neurofibromatose 1/patologiaRESUMO
Gastrointestinal stromal tumors (GISTs) are a rare group of mesenchymal tumors mainly occurring in the gastrointestinal tract. Previously, GISTs were classified as smooth muscle tumors also known as leiomyomas, leiomyosarcomas or leiomyoblastomas. However, since the advent of immunohistochemistry, GISTs have been diagnosed on the basis of the identification of c-kit-positive cells. We here report a case of stromal tumor of the small intestine in order to analyze it in the light of literature data and imaging results, which may suggest prebiopsy diagnosis as well as its therapeutic and prognostic peculiarities.
Assuntos
Tumores do Estroma Gastrointestinal/diagnóstico , Neoplasias Intestinais/diagnóstico , Intestino Delgado/patologia , Feminino , Tumores do Estroma Gastrointestinal/patologia , Humanos , Imuno-Histoquímica , Neoplasias Intestinais/patologia , Pessoa de Meia-Idade , Prognóstico , Proteínas Proto-Oncogênicas c-kit/análiseRESUMO
Mirizzi's syndrome is a rare complication of chronic vesicular lithiasis with prevalence ranging from 0.7% to 1.4% among patients who have undergone cholecystectomy. It is characterized by cholestatic icterus associated with compression of the common bile duct due to lodged calculus in the vesicular neck or in the cystic duct. The disease can evolve toward the erosion through the common hepatic duct wall and, therefore, it can cause the formation of a gallbladder-biliary fistula. We here report a case of Mirizzi's syndrome type I in order to highlight the role of preoperative diagnosis which is made easier by endoscopic retrograde cholangiography or by cholangio-MRI, allowing to avoid iatrogenic bile duct injuries. We conducted a review of the available literature on various aspects of this syndrome, including its pathogenesis, diagnosis and management.