Nag Adwaita, Krema Hatem, Kamil Zaid Saeed, Al-Mbaideen Suzan
Ocular Oncology Service, Department of Ophthalmology and Visual Sciences, Princess Margaret Cancer Centre/University Health Network, University of Toronto, Toronto, ON, Canada.
Department of Diagnostic and Molecular Pathology, University of Toronto, Toronto, ON, Canada.
Case Rep Oncol. 2024 Jul 10;17(1):712-716. doi: 10.1159/000539720. eCollection 2024 Jan-Dec.
Intramuscular hemangiomas of extraocular muscles are extremely rare tumors that usually present as retro-orbital masses causing proptosis. We describe a previously unreported presentation, in the form of an epibulbar mass; this easily accessible location allows direct imaging, complete surgical resection, and histopathological confirmation, providing a unique perspective.
A 69-year-old woman presented with a painless dark red mass in the lateral part of the right eye, which had been slowly enlarging over the last 18 months. Clinical features and imaging were suggestive of a benign vascular tumor of the conjunctiva. During surgical resection, the mass was observed to be enmeshed within the fibers of the lateral rectus muscle. Careful dissection from muscle fibers was needed for complete excision. Histopathology revealed the diagnosis of an intramuscular hemangioma of extraocular muscle.
In this report, we describe the atypical anterior epibulbar presentation of intramuscular hemangioma of the lateral rectus muscle. We discuss the differential diagnoses and management of this rare tumor along with a review of existing literature. Careful surgical resection achieved complete resolution in this case without recurrence.
眼外肌内的海绵状血管瘤是极为罕见的肿瘤，通常表现为引起眼球突出的眶后肿块。我们描述了一种以前未报告过的表现形式，即球结膜下肿块；这个易于触及的位置便于进行直接成像、完整的手术切除和组织病理学确认，提供了一个独特的视角。
一名69岁女性患者，右眼外侧出现一个无痛性暗红色肿块，在过去18个月中逐渐增大。临床特征和影像学检查提示为结膜良性血管肿瘤。手术切除过程中，发现肿块与外直肌纤维交织在一起。为了完整切除，需要仔细从肌纤维中分离。组织病理学检查确诊为眼外肌内海绵状血管瘤。
在本报告中，我们描述了外直肌内海绵状血管瘤非典型的球结膜前部表现。我们讨论了这种罕见肿瘤的鉴别诊断和治疗方法，并回顾了现有文献。在本病例中，仔细的手术切除实现了完全治愈，无复发。
