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By Gustavo Uriel Fonseca Aguirre
Hospital de la Luz - Uploaded on Apr 17, 2025.
- Last modified by Joshua Friedman on Apr 18, 2025.
- Rating
- Appears in
- Choroidal Osteoma
- Condition/keywords
- choroidal osteoma, macular choroidal osteoma
- Photographer
- Gustavo U. Fonseca Aguirre, Hospital Conde de Valenciana, Ciudad de México
- Imaging device
- Ultrasonography device
- Description
- Top (B-mode): The longitudinal scan reveals a hyperechoic, flat, and well-demarcated macular lesion with posterior acoustic shadowing, pathognomonic for choroidal osteoma. Bottom (A-mode): Standardized tracing shows a tall initial spike (100% reflectivity) at the tumor surface with rapid decay to acoustic silence, confirming sound absorption by calcified tissue. This pattern remains unchanged at variable gain settings.
