The disadvantage is that capsules are easier (and therefore cheaper) to make than hollow, fluid-filled fibres.

ECONOMIST: Monitor

It is very frequently associated with dermatitis herpetiformis, an itchy red raised rash with fluid-filled vesicles.

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Thyroid nodules may also be cysts, fluid-filled cavities, or swellings caused by thyroid inflammation.

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X-rays and ultrasound had failed to clarify whether the mass was a fluid-filled cyst or a solid tumor.

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Although the lenses are fixed in shape, they are connected via a network of fluid-filled channels, containing a light-absorbing pigment.

ECONOMIST: REPORTS

Small fluid-filled cysts are part of the normal functioning of the ovary.

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Intellectual Ventures just had a patent issued on automatic, battery-powered glasses, with a tiny video camera that reads the image off the retina and adjusts the fluid-filled lenses accordingly, up to ten times a second.

NEWYORKER: In the Air

The expected course of ovarian cysts varies with a woman's age, the size of the cyst, whether there is a family history of ovarian cysts, and whether the cyst is fluid-filled, appears to be a solid mass of tissue, or has both fluid and solid components.

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Then a chest X-ray showed that her left lung had collapsed, and her chest was filled with fluid.

NEWYORKER: Letting Go