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  • Title: Clinical presentation and urachal remnant pathology: implications for treatment.
    Author: Copp HL, Wong IY, Krishnan C, Malhotra S, Kennedy WA.
    Journal: J Urol; 2009 Oct; 182(4 Suppl):1921-4. PubMed ID: 19695622.
    Abstract:
    PURPOSE: Symptomatic pediatric urachal remnants are frequently excised but to our knowledge it is unknown whether incidentally identified urachal remnants require removal. Urachal remnant excision in childhood is advocated to avoid future malignancy. Urachal anomalies that contain fibrostromal tissue without epithelium may have lower malignant potential and not require excision. In contrast, lesions with epithelium may have increased potential to undergo malignant transformation. We examined whether incidentally identified urachal remnants would be less likely to contain epithelial elements and not require removal. MATERIALS AND METHODS: At our institution 29 patients underwent surgical excision of a urachal anomaly from 1999 to 2008. We retrospectively investigated the presentation mode, radiographic findings, associated genitourinary abnormalities, operative approach, tissue pathology, complications and followup in each patient. RESULTS: The male-to-female ratio was 1.2:1. Patient presentation was incidental (5) or symptomatic (24). Symptomatic presentations included umbilical discharge without omphalitis in 13 cases, umbilical discharge with omphalitis in 7, omphalitis without umbilical discharge in 3 and urinary tract infection in 1. The epithelial types identified were transitional, gastrointestinal, squamous, metaplastic and mixed. Epithelium was present on pathological analysis in 3 of 5 patients who presented incidentally and in 17 of 24 who presented symptomatically. Statistical analysis showed no association between presentation mode and pathology (p = 0.63). Five patients 4 weeks to 2.5 months old had vesicoureteral reflux on voiding cystourethrogram for urachal remnant evaluation. CONCLUSIONS: Analysis of 29 patients with urachal anomalies showed no association between incidental presentation and fibrostromal pathology. Patients presenting without symptoms were as likely to have epithelial elements in the urachal remnant as those presenting with symptoms. We could not define treatment recommendations for incidentally identified urachal remnants based on predicting the histopathological composition.
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