A case of hemangioma in the masseter muscle in which dynamic MRI was useful for preoperative diagnosis

Autor:	Kazuhiko Mashima, Hiroko Sekiguchi, Yoshiho Chigono, Arimi Harasawa, Hirohiko Kishi
Rok vydání:	2000
Předmět:	medicine.medical_specialty business.industry Trismus medicine.disease Surgery Masseter muscle Hemangioma medicine.anatomical_structure Venous Hemangioma Dynamic contrast-enhanced MRI Medicine Radiology medicine.symptom Swelling business Pathological Subcutaneous tissue
Zdroj:	Japanese Journal of Oral & Maxillofacial Surgery. 46:790-792
ISSN:	2186-1579 0021-5163
Popis:	A 37-year old woman presented with swelling of the right cheek and trismus. The patient had had indolent swelling of the right cheek since 1992. The pain had resolved, but the swelling increased. On July 4, 1998, initial examination revealed a soft swelling measuring about 20mm in diameter in normal colored subcutaneous tissue directly below the right zygomatic arch. MRI showed muscle and similar signals on T 1-weighted images and a lobular region showing high signals on T 2-weighted images. Dynamic MRI examination revealed a gradually increasing plateau in which the contrast effects reached a peak after 3 minutes and continued for 20 minutes. These findings were not inconsistent with hemangioma without arteriovenous malformation.On August 19, 1998, the patient underwent surgery. The pathological diagnosis was venous hemangioma. The postsurgical course was good, and there was bilateral symmetry, with no facial nerve palsy or trismus.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9b396acef1b317eb5070f305a0812fc5 https://doi.org/10.5794/jjoms.46.790 Zobrazit plný text záznamu