Although definite radiologic differentiation from malignancy is not clearly possible, we suggest that familiarity with the manifestations of inflammatory pseudotumor can help avoid unnecessary radical surgery before histopathologic proof of malignancy is obtained.

Neonates with obstructive uropathy, severe hydronephrosis or hydroureteronephrosis have increased risk of urinary tract infection even without reflux, and antibiotic prophylaxis may be recommended.

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Virtual cystoscopy of the contrast material-filled bladder is useful for the evaluation of the bladder in patients with gross hematuria.

MR imaging with an endovaginal coil revealed significant morphologic alterations of the urethra and supporting structures in patients with stress urinary incontinence.

Although clear radiologic differentiation of solitary fibrous tumors from malignancy is not possible, we suggest that familiarity with the manifestations of solitary fibrous tumors can help to avoid unnecessary radical surgery before histopathologic proof of malignancy is obtained.

Stress urinary incontinence (SUI) is defined as the involuntary loss of urine that occurs due to increased intra-abdominal pressure and without detrusor contraction. Many investigators have attempted to classify SUI, and the classification of Blaivas et al (1), based on the descent of the bladder neck revealed by cystography, has been widely accepted because it provides useful information for determining the treatment modality. According to this classification system, retropubic urethropexy is indicated for patients with type-0 to type-IIb SUI, and suburethral sling for those with type-III SUI (1).Although the Blaivas classification adequately reflects the degree of integrity of the intrinsic sphincter by grading the descent of the bladder neck between resting and stress states, morphological alteration in the resting state, involving subtle opening of the bladder neck with- Purpose: To evaluate the clinical and urodynamic significance of the beaking sign at cystography in patients with stress urinary incontinence (SUI). Materials and Methods:We retrospectively reviewed the cystograms of 253 patients with SUI, defining the beaking sign as the triangular contrast collection below the bladder base in the resting state without overt leakage. Various clinical parameters including patient age, symptom duration, parity, the one-hour pad test, and urodynamic study data including Valsalva leak point pressure (VLPP) and maximal urethral closing pressure (MUCP) were compared between the beaking-positive and the beaking-negative group. The distribution of Blaivas type in SUI between these two groups was also analysed. Results:The beaking sign was observed in 153 patients (60%). Those who were older and showed greater parity more often belonged to the beaking-positive group than the beaking-negative (p<0.05). Both VLPP and MUCP were significantly lower in the beaking-positive group than in beaking-negative group (p=0.03; p=0.01, respectively). Type-0 or -I SUI was more common in the beaking-negative group, while the frequency of other types was similar between the two groups. Conclusion:The beaking sign has clinical and urodynamic significance, reflecting functional deficiencies of the intrinsic sphincter, and may possibly be regarded as an additional parameter in the planning of treatment.

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