Fig. 4From: Cytokeratin-positive interstitial reticulum cell (CIRC) tumor in the lymph node: a case report of the transformation from the epithelioid cell type to the spindle cell typeElectron microscopy analysis of primary cytokeratin-positive interstitial reticulum cell (CIRC) tumor cells. A few interdigitating cell processes were observed (arrow). Some tumor cells had desmosome-like junctions (arrowhead). Of note, the tumor cells had no endocrine granules. Original magnification, × 20,000Back to article page