Bladder schistosomiasis

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[edit] Discussion of Bladder schistosomiasis

  • Bladder schistosomiasis is a major health problem in developing parts of the world, especially Africa
  • Schistosoma haematobium is the cause.
    • The larvae are released from snails into water and penetrate human skin exposed to the infected water.
    • Larvae travel to the lungs and liver of the human host, where they reside until they mature.
    • After maturation, the adult worm pairs travel to the pelvic veins.
    • Eggs are deposited in the bladder wall vessels and incite a granulomatous response that results in polypoid lesions.
    • The eggs may go on to incite a chronic inflammatory response and fibrosis, which is an important predisposing factor for squamous cell carcinoma.

[edit] Imaging Findings for Bladder schistosomiasis

  • Imaging findings mirror the pathologic course.
  • In the acute phase, nodular bladder wall thickening is observed at urography or cross-sectional imaging.
  • The chronic phase is characterized by a contracted, fibrotic, thick-walled bladder with calcifications. These calcifications are typically curvilinear and represent the large numbers of calcified eggs within the bladder wall. A mass may be secondary to inflammation or complicating carcinoma, typically squamous cell carcinoma.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

[edit] References for Bladder schistosomiasis