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Title: Association of prostate-specific antigen levels and patterns of benign and malignant uptake detected. on bone scintigraphy in patients with newly diagnosed prostate carcinoma. Author: Jacobson AF. Journal: Nucl Med Commun; 2000 Jul; 21(7):617-22. PubMed ID: 10994663. Abstract: The bone scan patterns of benign and malignant uptake in 432 patients with newly diagnosed prostate carcinoma were reviewed in relation to prostate-specific antigen (PSA) levels determined within 4 months of scintigraphy. Scan results were categorized in terms of likelihood of metastatic disease and anatomical locations of benign and malignant lesions were tabulated. At least one suspect focus was identified in 138 scans (32%), and metastatic bone disease was present in 38 (9%). Metastatic disease prevalence increased from 1% for PSA <20 ng x ml(-1) to 58% for PSA>100 ng x ml(-1). Among patients with PSA>20 ng x ml(-1) (n = 157), 70 (45%) had at least one bone scan finding of concern for metastases and 35 (22%) proved to have metastatic disease. Almost all scans with metastases had either limited disease (< or = 5 suspicious lesions; n = 16; 42%) or extensive metastases (> 20 abnormalities; n = 19; 50%). The majority of patients with limited skeletal metastases had PSA < 100 ng x ml(-1) (11/16; 69%), while almost all patients with extensive skeletal involvement had PSA >100 ng x ml(-1) (17/19; 89%). Among those with limited metastatic disease, most (13/16; 81%) had at least one lesion in the pelvis or sacrum; the next most common sites were in the thoracic and lumbar spine (six each; 38%). In scans with a low to moderate suspicion for bone metastases, the only anatomical site with a significantly higher prevalence of malignant than benign lesions was the pelvis.[Abstract] [Full Text] [Related] [New Search]