Case report: A 25-year-old woman with right subacute sinusitis, complained about discomfort in her right eye. Clinical manifestations and computed tomography were suggestive of sub-periosteal orbital ethmoid wall abscess, for which the patient underwent urgent drainage. A solid tumor was found, with a positive biopsy for alveolar rhabdomyosarcoma. Complete remission and resolution of orbital symptoms were achieved with chemotherapy and radiation therapy.
Discussion: Alveolar orbital rhabdomyosarcoma in adults is uncommon. Rhabdomyosarcoma has a high risk of spreading. It can simulate a sinusitis, as in our patient, early diagnosis and early treatment being especially important in these patients.
Keywords: Apex; Masked orbital rhabdomyosarcoma; Rabdomiosarcoma; Rabdomiosarcoma alveolar; Rabdomiosarcoma orbitario enmascarado; Rhabdomyosarcoma; Rhabdomyosarcoma alveolar; Sinusitis; Ápex.
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