Sinonasal Hemangiopericytomas: Clinicopathologic and Imaging Findings

The Imaging Findings of Sinonasal Organized Hematoma

CT and MR imaging findings in sinonasal schwannoma.

We report a rare case of schwannoma of the sinonasal cavity, presenting with epistaxis and anosmia.

Sinonasal organized hematoma: CT and MR imaging findings.

BACKGROUND AND PURPOSE Sinonasal organized hematoma (OH) is an uncommon, nonneoplastic benign condition that can be locally aggressive. The purpose of this work was to characterize the CT and MR imaging findings of sinonasal OH. MATERIALS AND METHODS CT (n = 11) and MR (n = 10) images of 12 patients (9 men and 3 women; mean age, 41 years; range, 12-76 years) with pathologically proved sinonas...

Sinonasal Low-Grade Adenocarcinoma: Report of Three Cases with the Clinicopathologic and Immunohistochemical Findings

Low-grade adenocarcinomas that primarily arise within the sinonasal tract are uncommon tumors. We report here on three cases of primary sinonasal low-grade adenocarcinomas. The patients were 2 females and 1 male with ages of 48, 57 and 64, respectively. Microscopically, the tumors had a well developed tubulopapillary growth pattern that consisted of columnar or pseudostratified cells with eosin...

Intracranial meningeal hemangiopericytomas in children and adolescents: CT and MR imaging findings.

Intracranial meningeal hemangiopericytomas in children and adolescents are prone to bleeding during surgery. CT and MR imaging may serve a role in preoperative diagnosis. The purpose of this report was to describe the radiologic findings in 9 pathologically proved cases of intracranial meningeal hemangiopericytomas in children and adolescents. The average duration of symptoms was short (mean, 4...