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51.5 MB (1.8 MB compressed)
4535 x 3969 pixels
38.4 x 33.5 cm ⏐ 15.1 x 13.2 in (300dpi)
ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Ovarian cysts. Coloured transvaginal ultrasound scans of cysts (black) in a 26 year old woman's ovary. Cysts, fluid-filled sacs, are quite common in women of child-bearing age, they are rarely malignant (cancerous) and usually shrink and disappear over time. Ultrasound is a diagnostic technique that sends high frequency sound waves into the body via a transducer. The returning echoes are recorded and used to build an image of an internal structure.
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