Gliomatosis cerebri que simula encefalitis / Gliomatosis cerebri mimicking encephalitis

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Lesión ósea en maxilar superior en niño de 7 años: tumor de células gigantes / Bone lesion in maxilla in a seven-year-old boy: giant cell tumor

Se presenta el caso clínico de un varón de siete años con una lesión ósea solitaria en maxilar superior, descubierta de forma incidental en radiografía simple. Se trata de una lesión lítica, expansiva, con adelgazamiento cortical y abombamiento del hueso, sin mineralización interna, compatible radiológicamente con tumor de células gigantes, a pesar de la edad del paciente y la localización de la lesión. El diagnóstico se confirma con estudio anatomopatológico y se practica resección del tumor. Los tumores de células gigantes son tumores óseos primarios benignos relativamente frecuentes. En nuestro caso, el interés se centra en la importancia de la alta sospecha radiológica, ya que la frecuencia de aparición de estos tumores en individuos menores de 14 años es menor del 3%, y menos del 1% se localizan en el hueso maxilar. A propósito de este caso, se efectúa una revisión de las características radiológicas de estas lesiones, así como de su histología, historia natural y tratamiento, y pronóstico, ya que el conocimiento en profundidad de esta entidad es fundamental para establecer una correcta sospecha diagnóstica desde el inicio del estudio, especialmente en niños, en los que estos tumores son infrecuentes

We report the case of a seven-year-old boy with a solitary bone lesion in maxilla that was discovered incidentally on plain radiography. It was a lytic, expansive lesion with cortical thinning and bone swelling, but no internal mineralization. Despite the age of the patient and the site of the lesion, radiological examination revealed a lesion that was compatible with giant cell tumor. The histological study confirmed this diagnosis and the mass was resected. Giant cell tumors are relatively common primary, benign bone lesions. The case we present is of particular interest because of the important role of radiology in leading us to suspect this tumor, which has an incidence of less than 3% in children under 14 years of age, while less than 1% of them occur in maxilla. We propose a review of the radiological features of these tumors, as well as the histological findings, natural history, treatment and prognosis, since the in-depth knowledge of these lesions is essential for establishing the correct diagnostic suspicion at the start of the study. This is especially true in children, in whom these tumors are rare

[Cartilaginous tumors of the cricoid: imaging diagnosis. A case report]. / Tumores cartilaginosos de cricoides: diagnóstico por imagen. A propósito de un caso.

Cartilaginous tumors of the larynx are rare; although chondromas are the most frequent of these tumors. Laryngeal chondrosarcomas are even rarer, in spite of this being the most frequent histological variety of sarcoma (less than 1% of all malignant laryngeal tumors). These tumors are slow-growing, locally aggressive, and tend to recur. They are less aggressive in the larynx than in other sites: cervical or distant metastases are rare (8.5%) and recurrences often can be controlled. The most common presenting symptom is hoarseness with normal indirect laryngoscopy. The complementary studies of choice are computed tomography (CT) and magnetic resonance imaging (MRI). The role of these imaging techniques in the study of laryngeal chondroma and chondrosarcoma was examined. These sporadic tumors may be overlooked, although early identification is necessary for effective treatment.