What is it about?
Ultrasound criteria for T1b or T2 gallbladder carcinoma (GBC) are described. A protruding lesion without a deep hypoechoic area but with a conically thickened outermost hyperechoic layer corresponds to T1b carcinoma. In contrast, a protruding lesion with both a deep hypoechoic area and a conically thickened outermost hyperechoic layer corresponds to shallow T2 carcinoma (subserosal invasion depth ≤ 2 mm). A deep hypoechoic area represents an adenocarcinoma invading subserosa, accompanied by abundant fibrosis and lymphocytic infiltration, regardless of the characteristics of the outermost hyperechoic layer. Furthermore, the presence of a deep hypoechoic area is more significant than a thinned or split outermost hyperechoic layer in assessing the depth of carcinoma invasion.
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Why is it important?
Patients with early (T1) GBC have a good postoperative prognosis. Furthermore, radical resection provides a favorable prognosis for patients with shallow T2 GBC
Perspectives
Diagnosing T1 or shallow T2 GBC is crucial for selecting the appropriate surgical approach.
Ph.D., M.D. Taketoshi Fujimoto
Iida Hospital
Read the Original
This page is a summary of: Letter to the Editor: Ultrasound criteria for T1b or T2 gallbladder carcinoma, Journal of Medical Ultrasonics, September 2023, Springer Science + Business Media,
DOI: 10.1007/s10396-023-01364-1.
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