Variante amelanótica en melanoma cerebral primario: a propósito de un caso / Primary intracranial melanoma, amelanotic variant: Case report

El melanoma cerebral primario es un tumor muy infrecuente (0,07% de las neoplasias primarias del SNC). Generalmente muestra un abundante contenido en melanina, y solo en contadas ocasiones se han descrito variantes hipoamelanóticas. Presentamos el caso de una paciente con clínica de cefalea, paresia braquial izquierda y síndrome lobar frontal. La RM mostró una masa frontal derecha con captación homogénea de contraste. Como tratamiento, se realizó una resección quirúrgica completa. El estudio anatomopatológico fue diagnóstico para melanoma, con muy escaso contenido en melanina y alto índice proliferativo. Se realizó un estudio de extensión exhaustivo para descartar otra localización primaria. Debido a varias complicaciones intercurrentes, la paciente evolucionó desfavorablemente, sin llegar a recibir otros tratamientos. La variante amelanótica de los melanomas cerebrales primarios no ha sido descrita con detalle previamente. Repasamos la literatura al respecto y discutimos los detalles de manejo y diagnóstico de esta entidad clínica (AU)

Primary brain melanoma is a very rare tumour (only 0.07% of primary CNS neoplasms) which usually shows with abundant melanin content; whereas hypo/melanotic variants have been scarcely described. We introduce the case of a female patient with headache, left brachial paresis and frontal lobar syndrome. The MRI image showed a right frontal mass with homogeneous contrast uptake. As treatment, a complete surgical resection was performed. Pathology was diagnostic for melanoma, with very low melanin content and a high proliferative index. A thorough extension study was performed to rule out an extracranial primary origin. Due to several intercurrent complications, the patient evolved unfavorably, not being able to receive further treatment. The amelanotic variant of primary intracranial malignant melanomas has not been described in detail previously. We will review the literature, focusing on the particularities of management and diagnosis of this clinical entity (AU)

Primary intracranial melanoma, amelanotic variant: Case report.

Primary brain melanoma is a very rare tumour (only 0.07% of primary CNS neoplasms) which usually shows with abundant melanin content; whereas hypo/melanotic variants have been scarcely described. We introduce the case of a female patient with headache, left brachial paresis and frontallobar syndrome. The MRI image showed a right frontal mass with homogeneous contrast uptake. As treatment, a complete surgical resection was performed. Pathology was diagnostic for melanoma, with very low melanin content and a high proliferative index. A thorough extension study was performed to rule out an extracranial primary origin. Due to several intercurrent complications, the patient evolved unfavorably, not being able to receive further treatment. The amelanotic variant of primary intracranial malignant melanomas has not been described in detail previously. We will review the literature, focusing on the particularities of management and diagnosis of this clinical entity.

Cuidado con la biotina: un problema creciente en la práctica clínica / Awareness of biotin: A growing problem in clinical practice

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Pseudohipoaldosteronismo tipo 1 secundario a reflujo vesicoureteral: una urgencia endocrinológica / Pseudohypoaldosteronism type 1 secondary to vesicoureteral reflux: An endocrinologic emergency

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Liponeurocitoma del ventrículo lateral izquierdo. Revisión del primer caso descrito en España y análisis de la bibliografía / Liponeurocytoma in the left lateral ventricle. Presentation of the first case reported in Spain and literature review

El liponeurocitoma supratentorial es un tumor excepcional, de predominio en varones jóvenes. Su localización habitual son los ventrículos laterales, siendo excepcional la afectación del iii ventrículo. Se define como un tumor neuronoglial, de bajo grado, con áreas de lipomatosis asociada. La manifestación clínica más frecuente es la derivada de la aparición de hidrocefalia e hipertensión intracraneal secundaria. Presentamos el primer caso descrito en España de esta estirpe tumoral y uno de los pocos presentados, hasta la fecha, en las bases bibliográficas. Se describe el caso de un varón de 33 años de edad, afectado de clínica sensitiva crural y cefalea de reciente inicio. El estudio radiológico mostró la presencia de una gran tumoración supratentorial, intraventricular, multiquística, heterogénea, con áreas de lipomatosis asociada. El paciente fue intervenido, consiguiéndose la exéresis tumoral completa. El diagnóstico definitivo fue de liponeurocitoma supratentorial. La presencia de una tumoración intraventricular supratentorial, con áreas de degeneración grasa, debe obligar a considerar, dentro del diagnóstico diferencial, este tipo de tumor. La resección tumoral completa se considera el tratamiento de elección

Supratentorial liponeurocytoma is a rare tumor, predominatly appearing in young males. It most commonly affects the lateral ventricles, with involvement of the third ventricle being exceptional. It is defined as a low-grade neuroglial tumor, with areas of associated lipomatosis. The most common clinical manifestation is that resulting from the presence of secondary intracranial hypertension and hydrocephalus. We present the first case reported in Spain of this tumor type and one of the few appearing in the literature so far. We report the case of a 33-year-old male patient, suffering from crural sensitive sympoms and recent onset headache. The radiographic study revealed the presence of a large supratentorial tumor; intraventricular, multicystic, heterogeneous and with areas of associated lipomatosis. The patient underwent surgery and complete tumor resection was achieved. The definitive diagnosis was of supratentorial liponeurocytoma. The presence of a supratentorial intraventricular tumor with areas of fatty degeneration should lead us to consider this type of tumor in the differential diagnosis. Complete tumor resection is considered to be the treatment of choice

[Liponeurocytoma in the left lateral ventricle. Presentation of the first case reported in Spain and literature review]. / Liponeurocitoma del ventrículo lateral izquierdo. Revisión del primer caso descrito en España y análisis de la bibliografía.

Supratentorial liponeurocytoma is a rare tumor, predominantly appearing in young males. It most commonly affects the lateral ventricles, with involvement of the third ventricle being exceptional. It is defined as a low-grade neuroglial tumor, with areas of associated lipomatosis. The most common clinical manifestation is that resulting from the presence of secondary intracranial hypertension and hydrocephalus. We present the first case reported in Spain of this tumor type and one of the few appearing in the literature so far. We report the case of a 33-year-old male patient, suffering from crural sensitive symptoms and recent onset headache. The radiographic study revealed the presence of a large supratentorial tumor; intraventricular, multicystic, heterogeneous and with areas of associated lipomatosis. The patient underwent surgery and complete tumor resection was achieved. The definitive diagnosis was of supratentorial liponeurocytoma. The presence of a supratentorial intraventricular tumor with areas of fatty degeneration should lead us to consider this type of tumor in the differential diagnosis. Complete tumor resection is considered to be the treatment of choice.

Anticuerpos heterófilos y falsos positivos en la determinación de troponina I en el diagnóstico de cardiopatía isquémica / Heterophil antibodies and false positive troponin I results in the diagnosis of myocardial ischemia

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