[Orbital angiomyxoma: a case report].

A 14-year-old female patient presented with progressive proptosis of the left eye for four months, accompanied by decreased vision and diplopia for one month. Imaging examinations showed relevant manifestations of the mass in the left orbit. Following a biopsy and left orbital mass resection under general anesthesia, histopathological and immunohistochemical examinations confirmed a diagnosis of left orbital angiomyxoma. At the four-month follow-up, the patient's exophthalmos had significantly improved. However, imaging revealed that while the tumor had shrunk, a portion had invaded the left maxillary sinus. The patient's parents opted for regular follow-up monitoring.