Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Uveal melanoma ultrasound
Introduction
Overview
Overview
On ultrasound, uveal melanoma is characterized by internal vascularity, collar button shape, and solid low to medium echotexture.[1]
Ultrasound
Ultrasound
Ultrasound is an excellent modality for examining the globe and is able to visualise small plaque like or discoid uveal melanoma, with a thickness of less than 3 mm, which are usually difficult to assess on CT or MRI. Common features that may be present include:[1]
- Solid low to medium echotexture
- Internal vascularity
- Collar button shape
- This is the classic shape but not always the case
- Represents the tumor having broken through Bruch’s membrane
- Tumors may be irregular, lobulated or domed
Less common features that may be present include:
- Retinal detachment
- Posterior scleral bowing
- Choroidal excavation
- Vitreous or subretinal seeding
Additionally larger tumor are often significantly sound attenuating.
References
References
- ↑ 1.0 1.1 Retinoblastoma. Radiopedia(2015) http://radiopaedia.org/articles/primary-uveal-malignant-melanoma Accessed on October 21, 2015
- ↑ Image courtesy of Dr. Ahmed Abd Rabou Radiopaedia (original file [1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [3]