Abstract:
:A case of an inflammatory pseudotumor of the liver in a 75-year-old female with chronic hepatitis C whose radiologic features simulated that of hepatocellular carcinoma (HCC) is presented. On imaging studies, hypervascularity by CO2 ultrasound (US) angiography, enhancement at an early phase and isodensity at a late phase by incremental dynamic computed tomography (CT), perfusion defect by CT during arteriography (CTAP), and clinical background of hepatitis C virus (HCV) infection strongly suggested HCC. A US-guided needle biopsy revealed a mainly diffuse and polyclonal proliferation of lymphocytes positive for leukocyte common antigen (pan-lymphocyte cells), L-26 (B cell lymphocytes), and UCHL-1 (T cell lymphocytes), negative for both kappa and lambda light chains and sparsely distributed neutrophils and histiocytes. No lymphoid follicles were observed. The liver tissue around this tumor showed chronic hepatitis with mild activity and mild fibrosis. These histopathologic findings suggested that the diagnosis of inflammatory pseudotumor of the liver was tenable. As it is difficult to differentiate between inflammatory pseudotumor of the liver and HCC by imaging studies alone, supplemental biopsy, where possible, should be obtained when diagnostic imaging of tumors suggesting HCC is carried out. We emphasize that histopathology is a true gold standard in the diagnosis of this disease.
journal_name
Pathol Intjournal_title
Pathology internationalauthors
Kim SR,Hayashi Y,Kudo M,Matsuoka T,Imoto S,Sasaki K,Shintani S,Song KB,Park SY,Kim JH,Ando K,Koterazawa T,Kim KI,Ninomiya Tdoi
10.1046/j.1440-1827.1999.00927.xsubject
Has Abstractpub_date
1999-08-01 00:00:00pages
726-30issue
8eissn
1320-5463issn
1440-1827pii
pin927journal_volume
49pub_type
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