What is it about?
Ultrasound criteria for T1b or T2 gallbladder carcinoma (GBC) are described. A protruded lesion without a deep hypoechoic area but with a conically thickened outermost hyperechoic layer corresponds to T1b carcinoma. In contrast, a protruded 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 nor a split outermost hyperechoic layer in diagnosing 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.
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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