The resected orbital tumor shows infiltration of the extraocular muscles. Tumor biopsy was carried out six months after presentation. The tumor cells are large, polygonal, or round and the nuclei are folded, cleaved, or kidney-shaped. Mitoses and prominent nuclear abnormalities can be seen. The pathological diagnosis was diffuse large B cell lymphoma (hematoxylin-eosin, × 50).
Tatsugawa et al. Journal of Medical Case Reports 2009 3:104 doi:10.1186/1752-1947-3-104