Fig. 6From: Small cell carcinoma presenting as a biatrial mass with obstructive physiology: a case reportCardiac Tumor fine needle aspiration (FNA) Pathology. A TM Cardiac FNA cell block with synaptophysin IHC stain showing strong positivity, 400x. B TM Cardiac FNA cell block with CAM 5.2 IHC dot-like staining, 400x. C TM Cardiac FNA Diff-Quik stained smear showing discohesive tumor cells, 400XBack to article page