Genito-Urinary
Publication Date: 2014-11-01
History
10 years old neutered male dog presented for difficulty defecating
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Findings
Orthogonal radiographs of the thorax and abdomen are available for interpretation.
Thorax: overall the pulmonary parenchyma and cardiovascular structures are considered to be within normal limits. there is no radiographic evidence indicative of pulmonary metastasis.
Abdomen: There is overall good serosal detail within the abdominal cavity. The prostate is markedly enlarged resulting in dorsal deviation and compression of the colon at the level of L7 – S1. Furthermore in the ventral cranial aspect of the prostate, a moderate amount of dystrophic cloudy mineralization is noted. There is no evidence of sublumbar lymphadenopathy or lumbar vertebral lysis.
Incidentally, a radiolucent defect is noted within the proximal aspect of one of the tibia, this is most consistent with previous lateral suture surgery for cranial cruciate rupture.
Diagnosis
Prostatic carcinoma
Discussion
The presence of mineralization within the prostate of a neutered male dog is an almost pathognomonic sign for prostatic carcinoma. Prostatic carcinoma commonly metastasize to the sublumbar lymph nodes and the body of the lumbar vertebrae. The positive predictive value for prostatic mineralisation and prostatic neoplasia was 100% in one article. ( RELATIONSHIP BETWEEN PROSTATOMEGALY, PROSTATIC MINERALIZATION, AND CYTOLOGIC DIAGNOSIS CHRISTINA A. BRADBURY, JODI L. WESTROPP and RACHEL E. POLLARD)
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References
- http://onlinelibrary.wiley.com/doi/10.1111/j.1740-8261.2009.01510.x/full