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Related Experiment Videos

Pitfall-to-avoid pharyngeal opacities caused by bismuth subgallate.

W N Tannous1, E M Azouz, T L Tewfik

  • 1Department of Radilogy, Montreal Children's Hospital, McGill University, Quebec.

Canadian Association of Radiologists Journal = Journal L'Association Canadienne Des Radiologistes
|December 1, 1989
PubMed
Summary

Bismuth subgallate, a hemostatic agent, can cause faint linear radiopacities on radiographs after adenotonsillectomy. These findings mimic foreign bodies but are iatrogenic, requiring careful clinical correlation.

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Area of Science:

  • Radiology
  • Otolaryngology
  • Pharmacology

Background:

  • Bismuth subgallate is an occasionally used hemostatic agent for adenotonsillectomy.
  • Its insolubility and poor absorption are key properties.

Observation:

  • A 13-year-old girl presented with linear radiopacities in the nasopharynx and tonsillar bed.
  • These opacities were noted on plain radiographs.

Findings:

  • The radiopacities were caused by bismuth subgallate packing.
  • The findings mimicked foreign bodies or pharyngeal calcification.

Implications:

  • Accurate clinical information is crucial for interpreting iatrogenic radiodensities.
  • Radiologists and surgeons should be aware of this potential radiographic finding.

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