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Abstract
Case summary
A 32-year-old male visited our clinic with pain and decreased visual acuity in the left eye, which had developed 1 month prior to admission. Best corrected visual acuity of the left eye had decreased to 0.7, and 3 mm of proptosis was observed. A 1×1 cm sized soft orbital mass was palpated on the lateral area of the left lower eyelid. Funduscopic examination of the left eye revealed multiple horizontal choroidal folds. On magnetic resonance imaging, a well-demarcated tumor was identified that showed hypointense signal intensity on a T1-weighted scan and hyperintense signal intensity on a T2-weighted scan. We performed anterior orbitotomy with an inferior conjunctival forniceal incision. The tumor was well encapsulated and easily dissected and could be completely removed. Histopathologic examination showed many vascular elements and intervascular fibrous stromas composed of spindle cells. The tumor was classified as angioleiomyoma.
References
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Figure 1.
Preoperative MRI demonstrates a well‐ circumscribed oval mass occupying the inferolateral part of the left orbit. The tumor is hypointense on T1-weighted images (A, C) and hyperintense on T2-weighted images (B). The tumor shows gradual bright enhancement (D-F).
Figure 2.
Light micrograph of excisional biopsy specimen. (A) Photomicrographs show many vascular channels and spindle-shaped cells (hematoxylin‐ eosin, ×10). (B) The dilated vascular channels have thin walls that are difficult to distinguish from intervascular stroma, and it is diagnosed as cavernous type (hematoxylin‐ eosin, ×100). (C) The nuclei of tumor cells have blunted‐ ends, and show no mitotic figures (hematoxylin‐ eosin, ×200). (D) The tumor cells show intense positive staining with SMA (SMA, ×100).
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