RESUMEN

Malignant peripheral nerve sheath tumors (MPNSTs) are rare tumors derived from Schwann cells or pluripotent cells of the neural crest. In this report, we describe a 21-year-old Saudi woman who presented with an asymptomatic, solid, round, protruding tumor on the right upper back which was diagnosed as an MPNST with no stigmata of neurofibromatosis. It was completely excised with a wide surgical margin. The patient was followed up for 9 months with no evidence of recurrence.

Asunto(s)

Neoplasias de la Vaina del Nervio/diagnóstico , Neoplasias Cutáneas/diagnóstico , Adulto , Dorso , Femenino , Humanos , Imagen por Resonancia Magnética , Neoplasias de la Vaina del Nervio/patología , Neoplasias de la Vaina del Nervio/cirugía , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/cirugía

RESUMEN

Mesenteric teratoma is an extremely rare tumor, arising, akin all other teratomas, from totipotent primordial cells and displays a mixture of tissues of tridermal or bidermal origin. Two cases of mature mesenteric teratoma in a 5-month-old girl and a 4-month-old boy, the youngest reported in the literature, excluding a case recently diagnosed prenatally, are described. Diagnostic tools, differential diagnosis and management are also discussed.

Asunto(s)

Mesenterio/patología , Neoplasias Peritoneales/patología , Neoplasias Peritoneales/cirugía , Teratoma/patología , Teratoma/cirugía , Adulto , Biopsia con Aguja , Femenino , Estudios de Seguimiento , Humanos , Inmunohistoquímica , Lactante , Masculino , Neoplasias Peritoneales/diagnóstico por imagen , Embarazo , Medición de Riesgo , Arabia Saudita , Teratoma/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Ultrasonografía Prenatal