Objective To explore the correlation between ultrasound classification of liver and pelvic cystic echinococcosis in Tibet.Methods A total of 23 patients with co-occurrence cystic echinococcosis in the liver and pelvis who were admitted to the People's Hospital of the Tibet Autonomous Region were collected.All of them were confirmed by surgical pathology,ultrasound or CT examination.Ultrasound was applied to observe the location,number,size,shape and echo of the liver and pelvic hydatid lesions and conduct WHO classification.The correlation between ultrasound classification of liver and pelvic lesions was analyzed.Results In 23 patients with co-occurrence liver and pelvic cystic echinococcosis,liver lesions were identified in the left lobe in 3 cases,the right lobe in 19 cases,and in both lobes in 1 case.With the exception of 2 cases located in the right posterior segment of the liver,all remaining 21 cases were adjacent to the liver capsule.The ultrasound classificarion indicated that multivesicular type in 2 cases,ruptured inner cyst type in 3 cases,solid type in 3 cases,and calcified type in 15 cases.The lesions in the pelvis were located in the abdomen and pelvis in 3 cases,the pelvis in 20 cases,including 3 cases in the left pelvis,9 cases in the right pelvis,and 8 cases affecting the entire pelvis.The ultrasound classificarion were single cyst type in 1 case,multivesicular type in 10 cases,ruptured inner cyst type in 4 cases,solid type in 4 cases,and calcified type in 4 cases.Ultrasound correctly diagnosed 14 cases(60.9%),was inconclusive in 8 cases(34.8%),and incorrectly diagnosed 1 case(4.3%).The ultrasound classificarion of pelvic echinococcosis in the same patient were lower or equal to that of co-occurrence liver echinococcosis,indicating a positive correlation between them(r=0.442,P<0.05).Conclusion In the patients with co-occurrence cystic echinococcosis of the liver and pelvic in Tibet,the pelvic echinococcosis lesions are mostly caused by implantation and metastasis from liver lesions,and there is a correlation in the ultrasound classification.
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