Histologic assessment of biliary obstruction with different percutaneous endoluminal techniques

BMC Medical Imaging

Vincenzo David¹  Elisa Pagliara³  Giampiero Guido²  Luigi Giglio¹  Laura Greco¹  Alberto Rebonato¹  Filippo Maria Salvatori³  Vito Cantisani³  Michele Rossi¹ 

[1] Department of Radiology, "S. Andrea" Hospital-II Faculty "La Sapienza" University, Rome,00100, Italy;Department of Radiology, "Annunziata Civil Hospital"-Cosenza, 87100, Italy;Department of Radiology, "UmbertoI" Hospital-I Faculty "La Sapienza" University, Rome,00100, Italy

关键词: Percutaneus-cholangioscopy;    cytology;    Bile ducts;    biopsy;    Bile ducts;    Biliary neoplasms;   

Others  :  1126812
DOI  :  10.1186/1471-2342-4-3

 received in 2003-09-04, accepted in 2004-08-25,  发布年份 2004

【 摘 要 】

Background

Despite the sophisticated cross sectional image techniques currently available, a number of biliary stenosis or obstructions remain of an uncertain nature. In these pathological conditions, an "intrinsic" parietal alteration is the cause of biliary obstruction and it is very difficult to differentiate benign from malignant lesions using cross-sectional imaging procedures alone. We evaluated the efficacy of different endoluminal techniques to achieve a definitive pathological diagnosis in these situations.

Methods

Eighty patients underwent brushing, and or biopsy of the biliary tree through an existing transhepatic biliary drainage route. A subcoort of 12 patients needed balloon-dilatation of the bile duct and the material covering the balloon surface was also sent for pathological examination (balloon surface sampling). Pathological results were compared with surgical findings or with long-term clinical and instrumental follow-ups. Success rates, sensitivity, specificity, accuracy, confidential intervals, positive predictive value and negative predictive value of the three percutaneous techniques in differentiating benign from malignant disease were assessed.

The agreement coefficient of biopsy and brushing with final diagnosis was calculated using the Cohen's "K" value.

Results

Fifty-six patients had malignant strictures confirmed by surgery, histology, and by clinical follow-ups. Success rates of brushing, balloon surface sampling, and biopsy were 90.7, 100, and 100%, respectively. The comparative efficacy of brushing, balloon-surface sampling, and biopsy resulted as follows: sensitivity of 47.8, 87.5, and 92.1%, respectively; specificity of 100% for all the techniques; accuracy of 69.2, 91.7 and 93.6%, Positive Predictive Value of 100% for all the procedures and Negative Predictive Value of 55, 80, and 75%, respectively.

Conclusions

Percutaneous endoluminal biopsy is more accurate and sensitive than percutaneous bile duct brushing in the detection of malignant diseases (p < 0.01).

【 授权许可】

   
2004 Rossi et al; licensee BioMed Central Ltd.

【 图 表 】

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