Division of Oral and Maxillofacial Pathology, Columbia University Medical Center, 630 West 168th Street, PH15-1562W, New York, NY, 10032, USA.
Department of Oral and Maxillofacial Surgery, Columbia University Medical Center, New York, NY, USA.
Head Neck Pathol. 2020 Dec;14(4):1134-1138. doi: 10.1007/s12105-020-01137-z. Epub 2020 Feb 3.
Pseduomyogenic hemangioendothelioma (PMH) is a vascular neoplasm of intermediate biological potential first described by Hornick and Fletcher (Am J Surg Pathol 35:190-201, 2011). Despite its initial categorization as a malignant entity, PMH often demonstrates an indolent behavior profile, and thus was classified as a rarely metastasizing endothelial neoplasm in the 2013 WHO Classification of Tumors of Soft Tissue and Bone. It is a tumor primarily of skin and soft tissue, with most reported cases involving the trunk or extremities. To date, only one case of PMH involving the oral cavity has been reported. Herein, we present a case of PMH involving the mandibular gingiva and vestibule of a 33-year-old female and discuss the salient features of this entity.
假性肌源性血管内皮瘤（PMH）是一种中等生物学潜能的血管肿瘤，最初由 Hornick 和 Fletcher 描述（Am J Surg Pathol 35:190-201, 2011）。尽管最初被归类为恶性实体瘤，但 PMH 通常表现出惰性的行为特征，因此在 2013 年软组织和骨骼肿瘤 WHO 分类中被归类为罕见转移的内皮肿瘤。它主要是皮肤和软组织的肿瘤，大多数报道的病例涉及躯干或四肢。迄今为止，仅有一例口腔 PMH 的报道。在此，我们报告一例发生于 33 岁女性下颌牙龈和口腔前庭的 PMH，并讨论该肿瘤的特征。
