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Peer-reviewed veterinary case report

Prostate enlargement and mineral spots linked to cancer in dogs

By Bradbury, Christina A et al.·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2009·Veterinary Medical Teaching Hospital, United States·View original on PubMed

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Original publication title: Relationship between prostatomegaly, prostatic mineralization, and cytologic diagnosis.

Species:
dog

Plain-English summary

A study looked at 55 dogs with enlarged prostates (prostatomegaly) and found that neutered dogs with mineralization in the prostate were very likely to have prostate cancer (prostatic neoplasia). In fact, all neutered dogs with prostate mineralization had cancer, while intact dogs without mineralization were unlikely to have cancer. Some intact dogs with enlarged prostates had other issues like cysts or infections instead. This suggests that if your neutered dog has prostate mineralization, it’s important to discuss the possibility of cancer with your vet.

People also search for: dog prostate cancer symptoms · neutered dog prostate mineralization · enlarged prostate treatment in dogs

Abstract

Canine prostatic disease is commonly evaluated with abdominal ultrasound and radiographs. Mineralization of the prostate is often reported, but the clinical relevance of this finding is currently not known. The-purpose of this study was to characterize the relationship between ultrasonographic and radiographic prostate mineralization and the final diagnosis. Medical records of 55 dogs with evidence of prostatomegaly or prostatic mineralization and a cytologic diagnosis were evaluated. Radiographs and ultrasound images were assessed for caudal retroperitoneal lymphadenopathy, vertebral lesions, or other signs of metastasis, and mineralization was assessed semiquantitatively. Twenty-two of 55 (40%) dogs had prostatic neoplasia. Regarding neoplasia, mineralization in neutered dogs had a positive predictive value (PPV) of 100%, a negative predictive value (NPV) of 50%, and a sensitivity and specificity of 84% and 100%, respectively. Mineralization in intact dogs had a PPV of 22%, an NPV of 96%, and a sensitivity and specificity of 67% and 77%, respectively. All neutered dogs with prostatomegaly but not prostatic neoplasia had bacterial prostatitis and were castrated within the previous 3 months. Intact dogs with prostatomegaly and mineralization but not neoplasia had paraprostatic cysts (n = 3), benign prostatic hyperplasia (n = 2) or prostatitis (n = 2). Mineralization score was not indicative of neoplasia. In conclusion, neutered dogs with prostatic mineralization were very likely to have prostatic neoplasia. Intact dogs were unlikely to have prostatic neoplasia if no mineralization was found on radiographs or ultrasound.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19400462/