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. 2023 Dec;55(S 01):E1111-E1113.
doi: 10.1055/a-2164-0850. Epub 2023 Oct 6.

Color overlay of contrast-enhanced endoscopic ultrasound for pancreaticobiliary disease

Haruka Toyonaga  1 , Tsuyoshi Hayashi  1 , Masayo Motoya  1 , Toshifumi Kin  1 , Kuniyuki Takahashi  1 , Akio Katanuma  1
Affiliations

Color overlay of contrast-enhanced endoscopic ultrasound for pancreaticobiliary disease

Haruka Toyonaga et al. Endoscopy. 2023 Dec.
No abstract available

PubMed Disclaimer

Conflict of interest statement

A. Katanuma has received honoraria as a lecture fee from Olympus Co., Tokyo, Japan. H. Toyonaga, T. Hayashi, M. Motoya, T. Kin, and K. Takahashi declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
Case 1: Magnetic resonance cholangiopancreatography image of a branch duct intraductal papillary mucinous neoplasm in the pancreatic head.
Fig. 2
Fig. 2
Case 1: Contrast-enhanced endoscopic ultrasound indicated enhanced mural nodules in the branch duct intraductal papillary mucinous neoplasm. a Left: B-mode; right: normal contrast-enhanced mode. b Left: B-mode; right: color overlay mode.
Fig. 3
Fig. 3
Case 2: a Magnetic resonance cholangiopancreatography indicated left hepatic duct obstruction. b Contrast-enhanced computed tomography indicated obstruction and upstream dilation of the left hepatic duct; however, no obvious mass could be noted in the obstructed area. c Left: B-mode; right: normal contrast-enhanced mode. d Left: B-mode; right: color overlay mode. The numerous adjacent vessels and dilated bile ducts made it difficult to recognize the mass lesion in the conventional black and white contrast-enhanced endoscopic ultrasound mode. On switching to color overlay mode, hypovascular areas without orange contrast particles appeared and the lesions causing biliary obstruction could be identified (dashed circle).
Fig. 4
Fig. 4
Case 3: Contrast-enhanced computed tomography image indicated a hypovascular pancreatic head tumor, 50 mm in diameter, with multiple liver metastases. It was suspected that the inside of the tumor was necrotic.
Fig. 5
Fig. 5
Case 3: a There was a large mass lesion in the pancreatic head, which was hypovascular, and no viable location could be recognized by conventional contrast-enhanced endoscopic ultrasound (EUS). b In the color overlay mode, the contrast color map was overlaid onto the B-mode, so the lesion and blood flow could be well recognized even after switching to single view. EUS-guided tissue acquisition from the viable area was performed.
See this image and copyright information in PMC

References

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