Figure 2From: Unusual orbital lymphoma undetectable by magnetic resonance imaging: a case report 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).Back to article page