ABSTRACT
PURPOSE: To report a case of multiple solitary plasmacytomas that presented with painful erythematous swelling of the upper eyelid. The patient was diagnosed with extramedullary plasmacytoma, and was later found to have multiple metastases of the bone and soft tissue during follow up. CASE SUMMARY: A 55-year-old female patient presented with painful erythematous swelling of the left upper eyelid that persisted for 1 month prior to examination. Under suspicion of lacrimal gland inflammation, anti-inflammatory medication was started but the symptoms worsened. Orbital computed tomography showed that a mass infiltrated the left lacrimal gland. We performed incisional biopsy of the mass via eyelid crease incision. Based on histopathological examination, the mass was diagnosed as extramedullary plasmacytoma and the patient was treated with radiation. After a 10-month follow-up period, multiple metastases on the left parotid gland, thoracic spine, lumbar spine and pelvic bone were observed. Finally, we diagnosed the patient with multiple solitary plasmacytomas. CONCLUSIONS: We report the first case of multiple solitary plasmacytomas presenting with upper eyelid painful erythematous swelling. This condition should be considered for patients presenting with eyelid inflammation. In addition, long term follow up should be conducted to detect metastasis or recurrence.