Sarcina ventriculi in an Endoscopic Ultrasound-Guided Fine Needle Aspiration of a Perigastric Lymph Node with Metastatic Pancreatic Adenocarcinoma: A Carry-Through Contaminant Bacterial Microorganism from the Stomach

Figure 2

(a) As the diagnosis of malignancy was confirmed, scattered groups of microorganisms (arrows) were also identified in close proximity to some of the neoplastic cells (modified Giemsa stain, 1000X). (b) These clustered microorganisms were large and noted in tetrad arrangements with amphophilic tinctorial appearances (Papanicolaou stain, 1000X).

(a)

(b)