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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The incidence of prostate disease is high. However, accurate assessment of pathological conditions is still difficult. Although CT, MRI, and TRUS imaging methods provide useful information, each has specific drawbacks. Our work examines the potential and utility of 3D trans-urethral ultrasound (TUUS) for improved imaging of the prostate. Four normal canines were examined with TUUS. The catheter was placed in the urethra and used to image the prostate, rectum, bladder, ureter, neuro-vascular bundles, arteries, and surrounding tissue. 2D and 3D datasets were acquired and digitized. The 2D data provides useful visualization of the tissue. The clinician was also able to watch urine enter the bladder and perform a digital rectal exam in real-time. 3D data visualization required torodial reconstruction. The algorithm was optimized to provide very fast 3D reconstructions of the prostate. Segmentation of the data proved challenging, but 3D visualization, including volume rendered data and surface rendered data, were well accepted by clinicians. Clinicians and researchers determined a number of potential applications of these new techniques, including: prostate cancer diagnosis and staging, assessment of Benign Nodular Enlargement, assessment of physiologic function of the bladder, evaluation of morphologic properties of the prostate, and image guided biopsy and therapy.
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PMID:Trans-urethral ultrasound (TUUS) imaging for visualization and analysis of the prostate and associated tissues. 1097 25

We describe an unusual case of a prostatic adenocarcinoma presenting with a ureteric stricture secondary to a discrete metastatic lesion. A 76-year-old man presented with a short history of right loin pain. Initial examination was unremarkable, digital rectal examination was normal and prostate specific antigen was within normal range. Computed tomography showed right hydronephrosis and a distal ureteric stricture. A distal ureteric transitional cell carcinoma was thought to be most likely. A nephroureterectomy was carried out and histology revealed a skipped lesion of a metastatic prostate adenocarcinoma. Metastatic lesions to the ureters due to prostate cancer are rare. It was believed to be secondary to a transitional cell carcinoma as there was no evidence initially to suggest prostatic disease as the cause. A prostatic adenocarcinoma should be considered in the differential diagnosis of any lesions in the ureter believed to have a malignant origin.
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PMID:Ureteric stricture: an unusual presentation of metastatic prostate adenocarcinoma. 2303 52