Preoperative assessment of hepatocellular carcinoma tumor grade using needle biopsy: Implications for transplant eligibility

Timothy M. Pawlik, Ana L. Gleisner, Robert A. Anders, Lia Assumpcao, Warren Maley, Michael A. Choti

Research output: Contribution to journalArticle

138 Citations (Scopus)

Abstract

OBJECTIVE: To examine the diagnostic agreement of preoperative needle core biopsy (NCB) grading of hepatocellular carcinoma (HCC) compared with the final surgical pathologic tumor grade. SUMMARY BACKGROUND DATA: Some centers have adopted protocols for selecting patients with HCC for transplantation based on tumor grade as determined by preoperative NCB. The validity of NCB to predict final tumor grade has not been previously assessed. METHODS: A total of 211 patients who underwent hepatic resection, open radiofrequency, or transplantation for HCC between 1998 and 2004 were identified. Clinicopathologic, NCB, and surgical data were collected and analyzed using χ and κ statistics. RESULTS: A total of 120 (67.4%) of the 178 who underwent resection or transplantation had an NCB. On preoperative NCB, the majority of HCC cases were classified as well-differentiated (n = 35; 37.6%) or moderately differentiated (n = 44; 47.3%), while 14 (15.1%) cases were categorized as poorly differentiated. In contrast, when tumor grading was based on the final surgical specimen, there was a significantly higher proportion of HCC cases graded as poorly differentiated (well-differentiated, n = 34; 36.6%; moderately differentiated, n = 33; 35.5%; poorly differentiated, n = 26; 27.9%) (P < 0.05). The overall percent agreement of NCB and surgical pathology to determine tumor grade was poor (κ = 0.18, P < 0.0001). Whereas final pathologic tumor grade predicted the presence of microscopic vascular invasion (well, 15.7%; moderate; 31.9%, poor; 58.4%; P = 0.001), NCB grade did not (well, 23.7%; moderate, 28.0%; poor, 25.4%; P = 0.65). CONCLUSIONS: Selection of candidates for transplantation based on NCB tumor grade may be misleading, as NCB tumor grade often did not correlate with grade or presence of microscopic vascular invasion on final pathology. Clinicomorphologic criteria (tumor size, number) should remain the major determinants of eligibility for transplantation.

Original languageEnglish (US)
Pages (from-to)435-442
Number of pages8
JournalAnnals of Surgery
Volume245
Issue number3
DOIs
StatePublished - Mar 2007

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Large-Core Needle Biopsy
Needle Biopsy
Hepatocellular Carcinoma
Transplants
Neoplasms
Transplantation
Blood Vessels
Surgical Pathology
Neoplasm Grading
Pathology

ASJC Scopus subject areas

  • Surgery

Cite this

Preoperative assessment of hepatocellular carcinoma tumor grade using needle biopsy : Implications for transplant eligibility. / Pawlik, Timothy M.; Gleisner, Ana L.; Anders, Robert A.; Assumpcao, Lia; Maley, Warren; Choti, Michael A.

In: Annals of Surgery, Vol. 245, No. 3, 03.2007, p. 435-442.

Research output: Contribution to journalArticle

Pawlik, Timothy M. ; Gleisner, Ana L. ; Anders, Robert A. ; Assumpcao, Lia ; Maley, Warren ; Choti, Michael A. / Preoperative assessment of hepatocellular carcinoma tumor grade using needle biopsy : Implications for transplant eligibility. In: Annals of Surgery. 2007 ; Vol. 245, No. 3. pp. 435-442.
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abstract = "OBJECTIVE: To examine the diagnostic agreement of preoperative needle core biopsy (NCB) grading of hepatocellular carcinoma (HCC) compared with the final surgical pathologic tumor grade. SUMMARY BACKGROUND DATA: Some centers have adopted protocols for selecting patients with HCC for transplantation based on tumor grade as determined by preoperative NCB. The validity of NCB to predict final tumor grade has not been previously assessed. METHODS: A total of 211 patients who underwent hepatic resection, open radiofrequency, or transplantation for HCC between 1998 and 2004 were identified. Clinicopathologic, NCB, and surgical data were collected and analyzed using χ and κ statistics. RESULTS: A total of 120 (67.4{\%}) of the 178 who underwent resection or transplantation had an NCB. On preoperative NCB, the majority of HCC cases were classified as well-differentiated (n = 35; 37.6{\%}) or moderately differentiated (n = 44; 47.3{\%}), while 14 (15.1{\%}) cases were categorized as poorly differentiated. In contrast, when tumor grading was based on the final surgical specimen, there was a significantly higher proportion of HCC cases graded as poorly differentiated (well-differentiated, n = 34; 36.6{\%}; moderately differentiated, n = 33; 35.5{\%}; poorly differentiated, n = 26; 27.9{\%}) (P < 0.05). The overall percent agreement of NCB and surgical pathology to determine tumor grade was poor (κ = 0.18, P < 0.0001). Whereas final pathologic tumor grade predicted the presence of microscopic vascular invasion (well, 15.7{\%}; moderate; 31.9{\%}, poor; 58.4{\%}; P = 0.001), NCB grade did not (well, 23.7{\%}; moderate, 28.0{\%}; poor, 25.4{\%}; P = 0.65). CONCLUSIONS: Selection of candidates for transplantation based on NCB tumor grade may be misleading, as NCB tumor grade often did not correlate with grade or presence of microscopic vascular invasion on final pathology. Clinicomorphologic criteria (tumor size, number) should remain the major determinants of eligibility for transplantation.",
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AU - Maley, Warren

AU - Choti, Michael A.

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N2 - OBJECTIVE: To examine the diagnostic agreement of preoperative needle core biopsy (NCB) grading of hepatocellular carcinoma (HCC) compared with the final surgical pathologic tumor grade. SUMMARY BACKGROUND DATA: Some centers have adopted protocols for selecting patients with HCC for transplantation based on tumor grade as determined by preoperative NCB. The validity of NCB to predict final tumor grade has not been previously assessed. METHODS: A total of 211 patients who underwent hepatic resection, open radiofrequency, or transplantation for HCC between 1998 and 2004 were identified. Clinicopathologic, NCB, and surgical data were collected and analyzed using χ and κ statistics. RESULTS: A total of 120 (67.4%) of the 178 who underwent resection or transplantation had an NCB. On preoperative NCB, the majority of HCC cases were classified as well-differentiated (n = 35; 37.6%) or moderately differentiated (n = 44; 47.3%), while 14 (15.1%) cases were categorized as poorly differentiated. In contrast, when tumor grading was based on the final surgical specimen, there was a significantly higher proportion of HCC cases graded as poorly differentiated (well-differentiated, n = 34; 36.6%; moderately differentiated, n = 33; 35.5%; poorly differentiated, n = 26; 27.9%) (P < 0.05). The overall percent agreement of NCB and surgical pathology to determine tumor grade was poor (κ = 0.18, P < 0.0001). Whereas final pathologic tumor grade predicted the presence of microscopic vascular invasion (well, 15.7%; moderate; 31.9%, poor; 58.4%; P = 0.001), NCB grade did not (well, 23.7%; moderate, 28.0%; poor, 25.4%; P = 0.65). CONCLUSIONS: Selection of candidates for transplantation based on NCB tumor grade may be misleading, as NCB tumor grade often did not correlate with grade or presence of microscopic vascular invasion on final pathology. Clinicomorphologic criteria (tumor size, number) should remain the major determinants of eligibility for transplantation.

AB - OBJECTIVE: To examine the diagnostic agreement of preoperative needle core biopsy (NCB) grading of hepatocellular carcinoma (HCC) compared with the final surgical pathologic tumor grade. SUMMARY BACKGROUND DATA: Some centers have adopted protocols for selecting patients with HCC for transplantation based on tumor grade as determined by preoperative NCB. The validity of NCB to predict final tumor grade has not been previously assessed. METHODS: A total of 211 patients who underwent hepatic resection, open radiofrequency, or transplantation for HCC between 1998 and 2004 were identified. Clinicopathologic, NCB, and surgical data were collected and analyzed using χ and κ statistics. RESULTS: A total of 120 (67.4%) of the 178 who underwent resection or transplantation had an NCB. On preoperative NCB, the majority of HCC cases were classified as well-differentiated (n = 35; 37.6%) or moderately differentiated (n = 44; 47.3%), while 14 (15.1%) cases were categorized as poorly differentiated. In contrast, when tumor grading was based on the final surgical specimen, there was a significantly higher proportion of HCC cases graded as poorly differentiated (well-differentiated, n = 34; 36.6%; moderately differentiated, n = 33; 35.5%; poorly differentiated, n = 26; 27.9%) (P < 0.05). The overall percent agreement of NCB and surgical pathology to determine tumor grade was poor (κ = 0.18, P < 0.0001). Whereas final pathologic tumor grade predicted the presence of microscopic vascular invasion (well, 15.7%; moderate; 31.9%, poor; 58.4%; P = 0.001), NCB grade did not (well, 23.7%; moderate, 28.0%; poor, 25.4%; P = 0.65). CONCLUSIONS: Selection of candidates for transplantation based on NCB tumor grade may be misleading, as NCB tumor grade often did not correlate with grade or presence of microscopic vascular invasion on final pathology. Clinicomorphologic criteria (tumor size, number) should remain the major determinants of eligibility for transplantation.

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