نتایج جستجو برای: sinonasal tract
تعداد نتایج: 136660 فیلتر نتایج به سال:
Papillomas are uncommon tumors of the sinonasal tract histologically derived from the Schneiderian membrane. Three distinctive variants are described, the exophytic, the inverting and the oncocytic types. On physical examination, their appearance varies from exophytic-fungiform seen in the exophytic variant, to polypoid-papillary in both the inverting and oncocytic variant. The presence of an a...
BACKGROUND Extramedullary plasmacytoma is a rare neoplasm characterized by monoclonal proliferation of plasma cells outside bone marrow. It accounts for 4% of all non-epithelial sinonasal tumors. According to the literature, radiotherapy is the standard therapy for extramedullary plasmacytoma. However, the conversion rate of extramedullary plasmacytoma to multiple myeloma is reported to be betw...
BACKGROUND Low-grade papillary adenocarcinomas of the sinonasal tract are rare neoplasms. Over recent years, little doubt remains that this tumour represents a separate entity based on morphology, ultrastructural features and behaviour. We outline a case of this rare entity displaying a not hitherto described immunophenotype. CASE PRESENTATION A 32 year old man presented recurrent epistaxis w...
Sarcoidosis is a chronic systemic disease that rarely manifests within the sinuses or orbit. A 65-yearold female presented with 2 weeks of eye proptosis and forehead pressure. A computed tomography scan revealed frontal sinus opacification. The initial diagnosis of orbital cellulitis secondary to frontal sinus infection was made but symptoms returned after medical therapy. Biopsy of preaponeuro...
A 23-year-old male presented with a 3-month history of left purulent rhinorrhea, progressive nasal obstruction, and intermittent epistaxis. A fiberoptic examination revealed a large vascular polypoid mass completely filling the left nasal cavity. CT and MRI scans showed a large hypervascular mass involving the left nasal airway, maxillary antrum, and the anterior ethmoid cells. There was no bon...
BACKGROUND Cancers of the sinonasal region are rare and its survival rate remains poor because most of the patients are asymptomatic and diagnosed in advanced stages with surrounding important structures. OBJECTIVES This study attempted to analyze the clinical and histological features in addition to survival and prognostic factors of surgical treatment of sinonasal cancers. PATIENTS AND ME...
OBJECTIVE A 65-year-old man presented with a nine-month history of swelling in the midline of the forehead. After surgical intervention, this lesion was found to be a tumefactive fibroinflammatory lesion of the frontal sinus. This case report and review aims to report this new location for tumefactive fibroinflammatory lesion, and to discuss whether, in retrospect, there would have been alterna...
Objective: A 65-year-old man presented with a nine-month history of swelling in the midline of the forehead. After surgical intervention, this lesion was found to be a tumefactive fibroinflammatory lesion of the frontal sinus. This case report and review aims to report this new location for tumefactive fibroinflammatory lesion, and to discuss whether, in retrospect, there would have been altern...
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