RESUMO
Respiratory epithelial adenomatoid hamartoma (REAH) is a rare benign non-neoplastic sinonasal lesion that usually presents in the nasal cavity, paranasal sinuses, or olfactory cleft. We report a case of nasopharynx REAH mimicking a malignant tumour with incidental high 18-FDG uptake in a patient with colon cancer. Less than five similar cases have been reported to date, and this is the first case of REAH to show high uptake on PET/CT scans. Although hamartoma arising from the nasopharynx region is very rare, it should be considered in the differential diagnosis because it is a benign lesion and complete surgical resection is curative.
Assuntos
Hamartoma/diagnóstico , Doenças Nasofaríngeas/diagnóstico , Mucosa Respiratória , Fluordesoxiglucose F18 , Hamartoma/patologia , Humanos , Achados Incidentais , Masculino , Pessoa de Meia-Idade , Imagem Multimodal , Doenças Nasofaríngeas/patologia , Tomografia por Emissão de Pósitrons , Compostos Radiofarmacêuticos , Doenças Raras/diagnóstico , Doenças Raras/patologia , Mucosa Respiratória/patologia , Tomografia Computadorizada por Raios XRESUMO
Tanycytic ependymoma is a rare spindle-cell variant of ependymoma derived from tanycytes. Primitive neuroectodermal tumors usually have diffusion restriction, whereas ependymomas do not. Here, we present a case of tanycytic ependymoma with diffusion restriction. As far we are aware, this is the first case of tanycytic ependymoma in the English literature with diffusion restriction.
Assuntos
Imagem de Difusão por Ressonância Magnética , Ependimoma/diagnóstico , Neoplasias da Medula Espinal/diagnóstico , Coluna Vertebral/patologia , Adulto , Feminino , Proteína Glial Fibrilar Ácida/metabolismo , HumanosRESUMO
Polyarteritis nodosa is a rare disorder and a form of systemic vasculitis. A 48 year-old female was admitted to the hospital because menorrhagia and pelvic pain in February 1993. The patient underwent exploratory laparotomy resulting in a total hysterectomy and bilateral salpingo-oophorectomy for myoma of uterus and a right adnexal cystic mass. Histopathologic examination revealed left ovarian periarteritis nodosa. Further investigation and 9 months follow-up failed to show any systemic involvement. To our knowledge the isolated ovarian polyarteritis nodosa is the first case in the literature.
