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CASE REPORT
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“Invisible” pancreatic masses identified by EUS by the “ductal cutoff sign”


 Department of Gastroenterology, Geisinger Health System, Danville, Pennsylvania, USA

Correspondence Address:
David L Diehl,
Geisinger Medical Center, 100 N. Academy Av e, 21-11, Danville, PA 17822
USA
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/eus.eus_49_15

PMID: 30880727

Making a tissue diagnosis of pancreatic adenocarcinoma is best accomplished by EUS and fine-needle aspiration (FNA) of the lesion. Typically, a dark, or “hypoechoic” mass will be seen, which presents an obvious target for FNA. For small lesions, computerized tomography (CT) may be negative, but the lesion is still almost always seen on EUS imaging. Rarely, a pancreatic mass will appear isoechoic on EUS imaging. We report three “invisible” pancreatic masses identified only by a cutoff in the pancreatic duct (PD) and/or common bile duct (CBD). No mass, isoechoic or otherwise, was seen. EUS-FNA was performed in the area of ductal narrowing, with a positive identification of adenocarcinoma in these cases.


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    -  Fairley KJ
    -  Diehl DL
    -  Johal AS
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