Hepatic tuberculosis (TB) is usually associated with pulmonary or miliary TB, but primary hepatic TB is very uncommon even in countries with high prevalence of TB. The clinical manifestation of primary hepatic TB is atypical and imaging modalities are unhelpful for differential diagnosis of the liver mass. Image-guided needle biopsy is the best diagnostic method for primary hepatic TB. In the cases presented here, we did not perform liver biopsy because we believed the liver masses were cholangiocarcinoma, but primary hepatic TB was ultimately confirmed by postoperative pathology. Here we report two cases of patients who were diagnosed with primary hepatic TB mimicking mass-forming intrahepatic cholangiocarcinoma.
Biopsy ; Biopsy, Needle ; Cholangiocarcinoma* ; Diagnosis, Differential ; Hepatectomy ; Humans ; Liver ; Pathology ; Prevalence ; Tuberculosis ; Tuberculosis, Hepatic* ; Cholangiocarcinoma

No abstract available.
Aged ; *Bile Duct Neoplasms/diagnosis/pathology ; *Bile Ducts, Intrahepatic ; *Cholangiocarcinoma/diagnosis/pathology ; Humans ; Male

Combined hepatocellular-cholangiocarcinoma is a rare form of primary liver cancer showing features of both hepatocellular and biliary epithelial differentiation. We report here on a case with collision tumor, which apparently was the coincidental occurrence of both hepatocellular carcinoma and cholangiocarcinoma underlying schistosomiasis. A 39-year-old-Philippine female was transferred to our hospital for evaluation of a liver mass that was found on ultrasonography at a local hospital. HBsAg and Anti-HCV were negative and serum alpha-fetoprotein (AFP) level was normal. The tumor mass was histologically diagnosed as adenocarcinoma by sono-guided biopsy before the operation. Partial lobectomy was performed and we histologically identified the concurrent occurrence of hepatocellular carcinoma and cholangiocarcinoma, (a "collision type carcinoma").
Adenocarcinoma/diagnosis/pathology/surgery ; Adult ; Carcinoma, Hepatocellular/*diagnosis/pathology/surgery ; Cholangiocarcinoma/*diagnosis/pathology/surgery ; Female ; Humans ; Schistosomiasis/*physiopathology

No abstract available.
Aged ; Bile Duct Neoplasms/*diagnosis/pathology ; *Bile Ducts, Intrahepatic ; Carcinoma, Papillary/*diagnosis/pathology ; Cholangiocarcinoma/*diagnosis/pathology ; Female ; Humans

Bile Duct Neoplasms ; diagnosis ; Bile Ducts, Intrahepatic ; pathology ; Cholangiocarcinoma ; diagnosis ; Humans ; In Situ Hybridization, Fluorescence

No abstract available.
Bile Duct Neoplasms/*diagnosis/pathology ; *Bile Ducts, Intrahepatic ; Carcinoma, Hepatocellular/*diagnosis/pathology ; Cholangiocarcinoma/*diagnosis/pathology ; Humans ; Liver Neoplasms/*diagnosis/pathology ; Male ; Middle Aged ; Mixed Tumor, Malignant/*diagnosis/pathology

A bile duct lesion originating from intrahepatic bile ducts is generally regarded as an incidental pathologic finding in liver specimens. However, a recent study on the molecular classification of intrahepatic cholangiocarcinoma has focused on the heterogeneity of this carcinoma and has suggested that the cells of different origins present in the biliary tree may have a major role in the mechanism of oncogenesis. In this review, benign intrahepatic bile duct lesions—regarded in the past as reactive changes or remnant developmental anomalies and now noted to have potential for developing precursor lesions of intrahepatic cholangiocarcinoma—are discussed by focusing on the histopathologic features and its implications in clinical practice.
Bile Duct Neoplasms/*pathology ; Bile Ducts/pathology ; Bile Ducts, Intrahepatic ; Cholangiocarcinoma/*pathology ; Diagnosis, Differential ; Humans ; Liver/pathology

No abstract available.
Adenocarcinoma, Mucinous/*diagnosis/pathology ; Bile Duct Neoplasms/*diagnosis/pathology ; *Bile Ducts, Intrahepatic ; Carcinoma, Papillary/*diagnosis/pathology ; Cholangiocarcinoma/*diagnosis/pathology ; Humans ; Male ; Middle Aged ; Tomography, X-Ray Computed

No abstract available.
Carcinoma, Hepatocellular/*diagnosis/pathology ; Cholangiocarcinoma/*diagnosis/pathology ; Humans ; Liver Neoplasms/*diagnosis/pathology/radiography ; Male ; Middle Aged ; Neoplasms, Multiple Primary/*diagnosis/pathology/radiography ; Tomography, X-Ray Computed

Sarcomatoid transformation of intrahepatic cholangiocarcinoma is rarely found but usually has very poor prognosis due to the lack of effective approaches for early detection and its aggressive nature. We report a case of this tumor type, in a 60-year-old man who was referred to our hospital for further evaluation of screening-detected, asymptomatic hepatic lesion. Clinical diagnosis was elusive despite performance of different imaging modalities and a transcutaneous liver biopsy. Pathology of the surgically resected tumor demonstrated intrahepatic sarcomatoid cholangiocarcinoma. In our case, tumor cells expressed strong immunoreactivity to both cytokeratin-19 and vimentin. We assume the relatively good prognosis of this patient would be expected because surgery played a critical role at an early stage of the tumor.
Biopsy ; Cholangiocarcinoma* ; Diagnosis ; Humans ; Keratin-19 ; Keratins ; Liver Abscess* ; Liver* ; Middle Aged ; Pathology ; Prognosis ; Vimentin