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 1

(a) High cellularity EUS FNA direct smear with loosely cohesive neoplastic cells with open chromatin and discernable nucleoli in backgrounds of blood (Papanicolaou stain, 400X). (b) Higher magnification EUS FNA direct smear with cohesive groups of high nuclear/cytoplasmic ratio malignant cells with vague acinar architecture compatible with adenocarcinoma (modified Giemsa stain, 600X). (c) Cell block preparation with background eosinophilic granular debris (necrosis) and scattered overtly cytologically malignant individual cells with hyperchromasia and anisonucleosis (hematoxylin and eosin stain, 600X).

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