Radiographic and Ultrasonographic Features of Canine Paraprostatic Cysts

Abstract

Mineralization of paraprostatic cysts is reported to be uncommon. This retrospective study was performed to review the imaging findings of eight histologically confirmed canine paraprostatic cysts. Radiographic patterns of mineralization seen are described. Four of the eight dogs had mineralized cysts. Mineralization seen on radiography was not consistently seen on ultrasonography, probably due to the lack of acoustic shadowing artefact from the small depth of mineralized tissue. It is thus concluded that mineralization of paraprostatic cysts is more common than implied in the literature, and that radiography is superior to ultrasonography in identifying its presence.

Laparoscopic treatment for a prostatic cyst in a dog

“…This patient was presented due to an inguinal mass but was otherwise asymptomatic. Imaging techniques such as abdominal ultrasound are essential to diagnose prostatic cysts, and to evaluate their shape, location and size 8 . They normally present as fluid‐filled structures arising from the prostate into the abdomen or pelvic canal 8 .…”

“…Imaging techniques such as abdominal ultrasound are essential to diagnose prostatic cysts, and to evaluate their shape, location and size 8 . They normally present as fluid‐filled structures arising from the prostate into the abdomen or pelvic canal 8 . In this case, the diagnosis was accomplished with ultrasonography.…”

“…8 They normally present as fluid-filled structures arising from the prostate into the abdomen or pelvic canal. 8 In this case, the diagnosis was accomplished with ultrasonography.…”

Imaging Diagnosis—intra‐abdominal Lipoma

“…Paraprostatic cysts may become large, with a thick or thin wall, containing anechoic fluid with echogenic sedimentation 5 . However, mineralization of these cysts is also a hallmark radiographic feature, which was not present in the dog in this report 6 . Omental abscesses can have an irregular wall surrounding a hypoechogenic homogenous fluid‐filled center 7 .…”

Intra-abdominal necrotic lipoma diagnosed by computed tomography as a paraprostatic cyst

“…The etiology of paraprostatic cysts is insufficiently described. Several mechanisms have been proposed for the development of these cysts, including anomalous enlargement of the Müllerian duct remnant, abnormal retention of prostatic secretions caused by ductal obstruction, and as a sequel to prostatic hematoma [ 5 10 12 14 ]. CT of paraprostatic cysts reveals large, fluid-filled cavitary lesions arising from the prostate gland.…”