The Semi-erect Position for Better Visualization of Subphrenic Hepatocellular Carcinoma During Ultrasonography Examinations

Overview

Journal Ultrasonography

Date 2020 Jul 15

PMID 32660205

Citations 4

Authors

Seong Eun Ko

Min Woo Lee

Hyo Keun Lim

Ji Hye Min

Dong Ik Cha

Tae Wook Kang

Kyoung Doo Song

Min Ju Kim

Hyunchul Rhim

Affiliations

Soon will be listed here.

Abstract

Purpose: This study investigated which body position is more useful for visualizing subphrenic hepatocellular carcinomas (HCCs) during ultrasonography (US) examinations.

Methods: This prospective study was approved by the institutional review board and written informed consent was obtained from all patients. Twenty consecutive patients with a single subphrenic HCC (treatment-naïve, 1 to 3 cm) underwent a US examination for planning radiofrequency ablation. The examinations were done by one of three radiologists and the patients were examined in four different body positions-supine, right posterior oblique (RPO), left lateral decubitus (LLD), and semi-erect-by being positioned on a tilted table. The visibility of the index tumor was prospectively assessed using a 4-point scale. Needle insertion was considered to be technically feasible if the visibility score was lower than 2. The visibility score and technical feasibility were compared using the Wilcoxon signed rank test and the McNemar test, respectively, for pairwise comparisons between different body positions.

Results: The visibility score was significantly lower in the semi-erect position (median, 2; interquartile range, 1 to 2.75) than in the supine (3, 2 to 4), RPO (3, 2 to 4), and LLD (4, 3.25 to 4) positions (P=0.007, P=0.005, and P=0.001, respectively). The technical feasibility of needle insertion was also significantly higher in the semi-erect position (75%, 15/20) than in the supine (45%, 9/45), RPO (35%, 7/20), and LLD (20%, 4/20) positions (P=0.031, P=0.021, and P=0.001, respectively).

Conclusion: The semi-erect position is more useful for the visualization of subphrenic HCCs than the supine, RPO, or LLD positions.

Citing Articles

Usefulness of Body Position Change during Local Ablation Therapies for the High-Risk Location Hepatocellular Carcinoma.

Takada H, Komiyama Y, Osawa L, Muraoka M, Suzuki Y, Sato M Cancers (Basel). 2024; 16(5).

PMID: 38473393 PMC: 10930729. DOI: 10.3390/cancers16051036.

Tips for Preparing and Practicing Thermal Ablation Therapy of Hepatocellular Carcinoma.

Minami Y, Aoki T, Hagiwara S, Kudo M Cancers (Basel). 2023; 15(19).

PMID: 37835456 PMC: 10571938. DOI: 10.3390/cancers15194763.

Utility of fusion imaging for the evaluation of ultrasound quality in hepatocellular carcinoma surveillance.

Kim Y, Cho S, Lee J, Lee H, Choi J, Kim S Ultrasonography. 2023; 42(4):580-588.

PMID: 37722723 PMC: 10555691. DOI: 10.14366/usg.23106.

Percutaneous radiofrequency ablation for hepatic metastasis of colorectal cancer: assessment of tumor visibility and the feasibility of the procedure with planning ultrasonography.

Bae J, Lee M, Kang T, Song K, Cha D, Min J Ultrasonography. 2021; 41(1):189-197.

PMID: 34492754 PMC: 8696149. DOI: 10.14366/usg.21050.

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