To our knowledge, we report the first case of an extraconal orbital cystic schwannoma in Brazilian literature. The tumor grew slowly and progressively and was associated with minimal eccentric proptosis and diplopia. The radiologic study (orbital computed tomography) revealed a rounded, encapsulated, and extraconal cystic mass in the superior medial region of the right orbit in the supraorbital and supratrochlear nerve topography. An anterior orbitotomy with full excision of the tumor was performed, and the histopathology examination revealed that the tumor was a schwannoma. After the surgery, the patient experienced total remission of his symptoms.
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Os autores relatam o primeiro caso de hidrocistoma apócrino orbitário com confirmação imunohistoquímica. O tumor apresentou crescimento lento e progressivo, sem relato de baixa de acuidade visual, diplopia, epífora, secreção ou trauma prévio. Não houve proptose ou alteração da motilidade extraocular. O exame de imagem por tomografia computadorizada da órbita revelou uma lesão nodular, extraconal, de limites imprecisos, com áreas císticas e sólidas no seu interior, na região súpero-medial de órbita direita. O paciente foi submetido à orbitotomia por via anterior, com exérese integral da tumoração. O exame histopatológico revelou o diagnóstico de hidrocistoma apócrino e a imunohistoquímica confirmou o diagnóstico. Após a cirurgia, o paciente teve regressão total dos sintomas. Descritores: Hidrocistoma/diagnóstico; Hidrocistoma/cirurgia; Órbita/cirurgia; Tomografia computadorizada por raios x; Imunohistoquímica; Relatos de casos
Solitary fibrous tumor (SFT) is a rare mesenchymal spindle-cell neoplasm commonly found in the pleura; it is rare in the orbit and extremely rare in the lacrimal gland. We herein report a case of SFT of the lacrimal gland that mimicked a pleo morphic adenoma. We discuss the clinical, radiological, histopathological, and immunohistochemical findings that provided insight and rationale to accurately diagnose this case.
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