A B-scan ultrasound shows a dense, mobile, reflective mass behind the lens that moves with eye movement ('shower of floaters' on dynamic scan). The overlying retina is attached. What does this finding most likely represent?
- A Rhegmatogenous retinal detachment
- B Vitreous haemorrhage ✓
- C Choroidal melanoma
- D Posterior vitreous detachment with asteroid hyalosis
Correct answer: B. Vitreous haemorrhage
Explanation
A mobile, highly reflective vitreous opacity on B-scan that moves freely with eye movement and has an attached retina is consistent with vitreous haemorrhage. Asteroid hyalosis produces multiple bright reflective dots but is attached to the vitreous scaffold and does not produce the 'shower' pattern seen here. Choroidal melanoma produces a dome-shaped subretinal mass with choroidal excavation and acoustic shadowing.
Reference: Khurana Comprehensive Ophthalmology, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.