Unicentric Castleman’s disease in the orbit: A case report.

A 53‑year‑old man presented with a palpable mass on the left lower eyelid and occasional diplopia. Under suspicion of orbital lymphoma, an excisional biopsy was performed, and histopathology revealed Castleman’s disease. Castleman’s disease is a rare disorder of the lymphoid system, and only a few cases of Castleman’s disease in the orbit have been reported.

Benign mixed tumor of the lacrimal sac.

Neoplasms of the lacrimal drainage system are uncommon, but potentially life‑threatening and are often difficult to diagnose Among primary lacrimal sac tumors, benign mixed tumors are extremely rare. Histologically, benign mixed tumors have been classified as a type of benign epithelial tumor. Here we report a case of benign mixed tumor of the lacrimal sac.