Endorectal MRI of Prostatic and Periprostatic Cystic Lesions and Their Mimics

Curran, Sean; Akın, Oğuz; Ağıldere, Muhteşem; Zhang, Jingbo; Hricak, Hedvig; Rademaker, Jürgen

doi:10.2214/ajr.06.0759

Cited by 52 publications

(40 citation statements)

References 12 publications

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“…Poor emptying leads to retention of urine, stasis, infection and even stone formation in the cyst. [2] Patient presents with hematuria, irritative urinary symptoms or urethral discharge. Our case had similar irritative urinary symptoms.…”

Section: Discussionmentioning

confidence: 99%

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An abnormally large prostatic utricle cyst associated with unilateral renal agenesis

et al. 2013

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Section: Discussionmentioning

confidence: 99%

“…Prostatic utricle cyst, also called as prostatic utricular cyst,[1] is an area of focal dilatation occurring in the prostatic utricle ranging from few millimeters to 2 cm. [2] Very few cases have been reported in the literature. To our knowledge, this is the first case of such an abnormally large-sized prostatic utricle cyst.…”

Section: Introductionmentioning

confidence: 99%

An abnormally large prostatic utricle cyst associated with unilateral renal agenesis

et al. 2013

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“…In most case, the cyst in the midline of the prostate is a mullerian duct cyst or a prostatic utricle cyst. The former originates from the remnants of the mullerian duct, and the latter from the dilatation of the prostatic utricle [8]. Mullerian duct cysts and prostatic utricle cysts may cause obstructive urinary symptoms, irritative symptoms, pelvic pain, epididymal pain, hematuria or infertility.…”

Section: Discussionmentioning

confidence: 99%

Midline Prostatic Cysts Presenting with Chronic Prostatitis or Secondary Infertility and Minimally Invasive Treatment: Endoscopic or Laparoscopic Approach?

Zhang¹,

Fan²,

Wang³

et al. 2011

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Backgrounds: Surgical interventions especially minimally invasive treatments are recommended for symptomatic midline prostatic cysts. The endoscopic unroofing of cysts close to urethra is easy and simple, but it has little effect on the large cysts and cysts lying deeply, in contrast with the laparoscopic approach. Therefore, the selection of minimally invasive therapeutic approaches is important. The aim of this study is to describe our experience in the diagnosis and selection of minimally invasive treatment for midline prostatic cyst. Methods: 15 cases of midline prostatic cyst were studied.10 cases presented with prostatitis-like symptoms, 1 with dysuria and acute urinary retention, 3 with secondary infertility and the rest 1 with hemospermia. 6 patients presented with small cysts (≤2 cm × 2 cm) close to urethra and underwent transurethral unroofing. The other 9 patients with large cysts (>2 cm × 2 cm) or cysts lying closely behind the prostate received the laparoscopic excision. Results: The average duration of transurethral unroofing and laparoscopic excision was 39 mins and 118 mins respectively, whereas the average time of hospitalization was 2.7 days and 4.5 days respectively. After a follow-up of 21 months, all cases were treated successfully without complications and recurrence. Their prostatitis-like symptoms disappeared, and the three patients presented with secondary infertility achieved conception within one year after the operation. Conclusions: A midline prostatic cyst can present with chronic prostatitis-like symptoms and secondary infertility. It can be cured by minimally invasive treatments, but these procedures should be carefully selected according to the size and location of the cyst.

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“…It is internal to the prostate, and passes through the prostate from base to apex. We selected the urethra at the level of the verumontanum, where the ejaculatory duct opens into the urethra (28,29). Perfect agreement corresponds to an FRE of 0 mm.…”

Section: Methodsmentioning

confidence: 99%

MRI signal intensity based B‐Spline nonrigid registration for pre‐ and intraoperative imaging during prostate brachytherapy

Oguro

Tokuda

Elhawary

et al. 2009

Magnetic Resonance Imaging

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Purpose: To apply an intensity-based nonrigid registration algorithm to MRI-guided prostate brachytherapy clinical data and to assess its accuracy. Materials and Methods:A nonrigid registration of preoperative MRI to intraoperative MRI images was carried out in 16 cases using a Basis-Spline algorithm in a retrospective manner. The registration was assessed qualitatively by experts' visual inspection and quantitatively by measuring the Dice similarity coefficient (DSC) for total gland (TG), central gland (CG), and peripheral zone (PZ), the mutual information (MI) metric, and the fiducial registration error (FRE) between corresponding anatomical landmarks for both the nonrigid and a rigid registration method.Results: All 16 cases were successfully registered in less than 5 min. After the nonrigid registration, DSC values for TG, CG, PZ were 0.91, 0.89, 0.79, respectively, the MI metric was À0.19 6 0.07 and FRE presented a value of 2.3 6 1.8 mm. All the metrics were significantly better than in the case of rigid registration, as determined by one-sided t-tests. Conclusion:The intensity-based nonrigid registration method using clinical data was demonstrated to be feasible and showed statistically improved metrics when compare to only rigid registration. The method is a valuable tool to integrate pre-and intraoperative images for brachytherapy.

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Endorectal MRI of Prostatic and Periprostatic Cystic Lesions and Their Mimics

Cited by 52 publications

References 12 publications

An abnormally large prostatic utricle cyst associated with unilateral renal agenesis

An abnormally large prostatic utricle cyst associated with unilateral renal agenesis

Midline Prostatic Cysts Presenting with Chronic Prostatitis or Secondary Infertility and Minimally Invasive Treatment: Endoscopic or Laparoscopic Approach?

MRI signal intensity based B‐Spline nonrigid registration for pre‐ and intraoperative imaging during prostate brachytherapy

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