CT and MRI Findings of Glomangiopericytoma in the Head and Neck: Case Series Study and Systematic Review

Abstract

Glomangiopericytoma is a rare sinonasal mesenchymal tumor of borderline or low malignant potential. We reviewed the CT and MR imaging findings of head and neck glomangiopericytoma via a retrospective case series study and systematic review. Our study revealed that glomangiopericytoma is a well-defined lobulated avidly enhancing soft-tissue mass with erosive bony remodeling that is most commonly found in the sinonasal cavity. Typically, it is hyperintense on T2-weighted images with vascular signal voids, has a high mean ADC value, and a wash-in and washout pattern on dynamic contrast-enhanced MR imaging. Although the CT findings are nonspecific, typical MR imaging findings, including those on the ADC map and dynamic contrastenhanced MR imaging, may be helpful for differentiating glomangiopericytomas from other hypervascular tumors in the head and neck.

A rare case of glomangiopericytoma in the nasal cavity: A case report in light of recent literature

“…2 ). On imaging, GPC presents as an enhancing soft tissue mass that is spherical or lobulated in shape and bony erosive in nature [ 13 ]. On MRI, it shows a varied T2 appearance, including T2 hyperintensity and intermediate signal [ 13 ].…”

“…On imaging, GPC presents as an enhancing soft tissue mass that is spherical or lobulated in shape and bony erosive in nature [ 13 ]. On MRI, it shows a varied T2 appearance, including T2 hyperintensity and intermediate signal [ 13 ]. Although these investigations appear exhaustive, they permit only a presumptive diagnosis; thus, histopathological tissue diagnosis remains the gold standard for definitive diagnosis [ 14 ].…”

Sinonasal hemangiopericytoma: Report of two cases and review of literature

“…On MRI, literature shows typically hyperintense signal on T2WI with vascular signal voids, a high mean ADC value, and a wash-in and washout pattern on DCE-MR imaging. MR imaging findings, including the ADC value and DCE-MR imaging pattern, can help differentiate glomangiopericytomas from other hypervascular tumors in the head and neck, especially in the sinonasal cavity [12] . In our two cases, CT scan and MRI describe the extension tumor without giving any specific signs related to hemangiopericytoma.…”

A Case Report of a Solitary Fibrous Tumor of the Maxillary Sinus

“…Moreover, the radiological exams usually cannot be completely diriment regarding the final diagnosis, because of the similar aspects of SFTs and other mesenchymal tumors [18][19][20][21][22].…”