Korean J Urogenit Tract Infect Inflamm.  2013 Apr;8(1):55-58. 10.14777/kjutii.2013.8.1.55.

Xanthogranulomatous Inflammation of Urachus

• Oh JH
• Chung JM
• Choi S

• KMID: 2289255
• DOI: http://doi.org/10.14777/kjutii.2013.8.1.55

Abstract

Urachal xanthogranuloma is an extremely rare disease. An 18-year-old male presented with lower abdominal pain, hematuria, and dysuria. An urachal mass with bladder invasion, which was suspected to be an urachal carcinoma or abscess, was observed on computed tomography. Exploratory laparotomy, excision of the urachus, and partial cystectomy was performed by way of a lower midline incision. Histopathologic examination identified the mass as an urachal xanthogranuloma.

Keyword

Urinary bladder; Urachus; Xanthogranulomatous pyelonephritis

MeSH Terms

Abdominal Pain
Abscess
Adolescent
Cystectomy
Dysuria
Hematuria
Humans
Inflammation*
Laparotomy
Male
Pyelonephritis, Xanthogranulomatous
Rare Diseases
Urachus*
Urinary Bladder

Figure

• 

  Fig. 1. Ultrasound of bladder shows a protruding cystic mass in bladder dome. Sagittal (A) and transverse (B) plane.

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  Fig. 2. Computed tomography of the abdomen shows well enhancing mass in the anterior wall of urinary bladder. Sagittal (A) and transverse (B) plane.

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  Fig. 3. Cystoscopic finding shows erythematous mass in bladder dome.

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  Fig. 4. Gross finding shows an ill-defined gray white firm lesion (1.8×1.1×1.2 cm) at 4 cm apart from the resection margin. The cut surface of the mass is solid and gray white with yellow necrotic portion and focal cystic area.

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  Fig. 5. Histologic finding shows granulations and many foamy, lipid laden macrophages (H&E stain; A, ×100; B, ×400).

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