alexa ¹⁸F-FDG PET CT in hepatocellular carcinoma: detection of bone metastasis and prediction of prognosis.
Gastroenterology

Gastroenterology

Journal of Liver

Author(s): Seo HJ, Kim GM, Kim JH, Kang WJ, Choi HJ

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OBJECTIVE: The purpose of this study was to assess the diagnostic accuracy and prognostic value of 18F-fluorodeoxyglucose PET/computed tomography (CT) in bone metastases from hepatocellular carcinoma (HCC).

PATIENTS AND METHODS: Of 3912 consecutive HCC patients, 67 patients who had undergone both PET/CT and bone scintigraphy (BS) within a 3-month interval were evaluated.

RESULTS: Bone metastases were most frequently found in the pelvis (20%), followed by the lumbar spine (14%) and long bones (13%). PET/CT was significantly more sensitive than BS in region-based analyses, with 273 confirmed bone metastases (96.7 vs. 52.7%, respectively; P<0.001), and in patient-based analyses (99 vs. 85%; P=0.042). The median survival period was 5 (range, 0.4-18) months. On univariate analysis, poor prognostic factors included age (<60 years), multiple bone metastases, lymph node metastasis, high serum α-fetoprotein (≥400 IU/ml), Child-Pugh class B, and high maximum standardized uptake value (SUVmax) of bone metastasis (>5.0). Large metabolic volume (≥200 cm3) of bone metastasis was another poor prognostic factor. On Cox regression analysis, high α-fetoprotein was the only poor prognostic factor with statistical significance.

CONCLUSION: PET/CT was more sensitive than BS in bone metastasis from HCC by both patient-based and region-based analyses, and offered additional information on survival. PET/CT can be helpful in early diagnosis and opportune treatment of bone metastasis from HCC.

This article was published in Nucl Med Commun and referenced in Journal of Liver

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