Abstract
Radioimmunoscintigraphy using a radio-labelled antibody to prostate-specific membrane antigen (PSMA) has growing applications as a means of tissue‐specific imaging based on functional characteristics and complements traditional staging investigations. Clinical applications in men with carcinoma of the prostate are being refined, and this study reports outcomes with this technique in our practice. Prostatic immunoscintigraphy scans were performed with In‐111 CYT 356 in 49 men with carcinoma of the prostate, obtaining sequential images in two and three dimensions at 10 min, 24 and 48 h. Of the 49 men, 36 had clinically localized cancer, 10 had recurrent disease after radical radiotherapy or radical prostatectomy and three had rising PSA after primary endocrine treatment. Scan findings are discussed in the context of clinical management. Of the 36 men with clinically localized cancer, seven had increased uptake in regional and distant lymph nodes. Of these seven, three were treated with hormone manipulation, two by radical prostatectomy and two by radical radiotherapy. Among 10 patients who had recurrence after radical treatment of the primary tumour, scans showed local recurrence alone in four, and six had regional or distant metastases. Three patients treated with primary hormone manipulation had scans for rising PSA, and of these one had a positive regional node and two had distant soft tissue and bone metastases. In conclusion, prostatic radio‐immunoscintigraphy scans highlight tissues involved by prostate cancer, including the prostate, lymph nodes, soft tissues and bone metastases as well as pelvic recurrence. Results may contribute to the clinical management of individual patients, although histological confirmation may be appropriate when considering alternative treatment.
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Feneley, M., Jan, H., Granowska, M. et al. Imaging with prostate-specific membrane antigen (PSMA) in prostate cancer. Prostate Cancer Prostatic Dis 3, 47–52 (2000). https://doi.org/10.1038/sj.pcan.4500390
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DOI: https://doi.org/10.1038/sj.pcan.4500390
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