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Vol. 31. Issue 6.
Pages 299-305 (November - December 2020)
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Vol. 31. Issue 6.
Pages 299-305 (November - December 2020)
Caso clínico
Caso clínico: nevo de Ota y nevo de Ito asociados a melanocitosis meníngea
Case report: nevus of Ota and nevus of Ito associated with meningeal melanocytosis
Luis Alberto Nuñez del Arco Serranoa, Carlos Gabriel Flores Endericaa,
Corresponding author
cgflores@estud.usfq.edu.ec

Autor para correspondencia.
, Christian Eduardo Valencia Padillab
a Especialidad Médica en Neurocirugía, Colegio de Ciencias de la Salud, Universidad San Francisco de Quito, Quito, Ecuador
b Servicio de Neurocirugía, Hospital de Especialidades Carlos Andrade Marín, Instituto Ecuatoriano de Seguridad Social, Quito, Ecuador
Article information
Abstract
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Resumen
Introducción

El nevo de Ota y el nevo de Ito son melanocitosis dérmicas hiperpigmentarias que surgen como consecuencia de alteraciones o fallas en la migración de los melanocitos desde la cresta neural hacia la epidermis, tienen una etiopatogenia poco conocida y pueden ser congénitas o adquiridas.

Caso clínico

Se trata de un paciente con diagnóstico simultáneo de nevo de Ota y nevo de Ito desde el nacimiento que acude al Servicio de Neurocirugía del hospital Carlos Andrade Marín de la ciudad de Quito y consulta por presentar cefalea súbita de gran intensidad asociada a hemiparesia braquiocrural izquierda.

Evolución

Por medio de exámenes complementarios es diagnosticado de dos lesiones ocupantes intracraneales extraaxiales, una parasagital frontoparietal derecha y otra localizada en polo temporal derecho. Se planificó una resección quirúrgica de la lesión parasagital cuyo diagnóstico histopatológico fue melanocitosis meníngea. La lesión de polo temporal fue derivada para tratamiento con Gamma Knife®.

Conclusión

Los tumores melanocíticos primarios son extremadamente raros, existe evidencia de su asociación con las melanocitosis dérmicas y en especial con el nevo de Ota. El caso presentado describe la coexistencia de dos melanocitosis dérmicas poco frecuentes (nevo de Ota - nevo de Ito) y un tumor melanocítico primario en el mismo paciente, un caso muy fuera de lo común.

Palabras clave:
Nevo de Ota
Trastornos de la pigmentación
Nevo de Ito
Melanocitosis meníngea
Abstract
Background

Nevus of Ota and nevus of Ito are hyperpigmentary dermal melanocytoses which develop as a consequence of disturbances or failures during migration of melanocytes from the neural crest towards the epidermis; they have a relatively unknown aetiopathogenesis and may be congenital or acquired.

Case report

This case involves a male patient with a simultaneous diagnosis of nevus of Ota and nevus of Ito at birth. He attended the Neurosurgery department at Carlos Andrade Marín hospital (Quito) with sudden severe headache associated with left brachio-crural hemiparesis.

Progress

Investigations revealed two extra-axial space-occupying lesions, one parasagittal at the right frontal and parietal lobes and the other located at the right temporal lobe pole. A surgical resection was planned for the parasagittal lesion and the histopathological diagnosis was meningeal melanocytosis. The temporal pole lesion was referred for treatment with Gamma Knife®.

Conclusion

Primary melanocytic neoplasms are extremely rare. There is evidence of their association with dermal melanocytosis and, in particular, with nevus of Ota. This highly unusual case describes the coexistence of two very rare dermal melanocytoses (nevus of Ota and nevus of Ito) and a primary melanocytic neoplasms in the same patient.

Keywords:
Nevus of Ota
Pigmentation disorders
Nevus of Ito
Meningeal melanocytosis

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