Please use this identifier to cite or link to this item: https://doi.org/10.1159/000326470
Title: Highly well differentiated hepatocellular carcinoma and benign hepatocellular lesions: Can they be distinguished on fine needle aspiration biopsy?
Authors: Wee, A. 
Nilsson, B. 
Keywords: Aspiration biopsy
Hepatocellular carcinoma
Liver cancer
Liver neoplasms
Issue Date: Jan-2003
Citation: Wee, A., Nilsson, B. (2003-01). Highly well differentiated hepatocellular carcinoma and benign hepatocellular lesions: Can they be distinguished on fine needle aspiration biopsy?. Acta Cytologica 47 (1) : 16-26. ScholarBank@NUS Repository. https://doi.org/10.1159/000326470
Abstract: OBJECTIVE: To determine whether highly well differentiated hepatocellular carcinoma can be distinguished from benign hepatocellular lesions on fine needle aspiration biopsy (FNAB). STUDY DESIGN: Ninety-five FNABs from 88 patients with hepatic masses/diffuse conditions were reviewed according to new cytologic criteria established by Takenaka et al. They were classified into well-, moderately and poorly differentiated hepatocellular carcinomas (W-, M-and P-HCC) and benign aspirates and histologically verified. RESULTS: There were 21 W-HCC, 39 M-HCC, 10 P-HCC, 3 problematic and 22 benign aspirates. The most useful criteria for diagnosing highly W-HCC were architectural features on the smears/cell block sections, including hypercellularity; arborescent, cohesive clusters; broad trabeculae; transgressing and peripheral endothelium; and cytologic details of small, monotonous hepatocytes with nuclear crowding, decreased cytoplasm, increased nuclear/cytoplasmic ratio, atypical naked nuclei and tumor giant cells. Well-defined cytoplasmic borders, abundant thick and monotonous cytoplasm, eccentric nuclei, thick nuclear membranes, irregular nuclear contours, increased chromatin density, irregular chromatin distribution and macronucleoli were not always detectable in highly W-HCC. In fact, some of them were seen in dysplastic hepatocytes. Deficient reticulin patterns and diffuse sinusoidal CD34 reactivity were helpful. CONCLUSION: Experience, attention to architectural and cytologic details in smears/cell blocks and clinicopathologic correlation should reduce the number of indeterminate reports. However, there will always remain some cytohistologically challenging cases.
Source Title: Acta Cytologica
URI: http://scholarbank.nus.edu.sg/handle/10635/131378
ISSN: 00015547
DOI: 10.1159/000326470
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