Kegel exercises - Repeatedly tightening and releasing the pelvic muscle, in order to prevent urine leakage.

keloids - smooth, pink, raised, firm, fibrous growths on the skin that form secondary to injury.

keratinocytes (Also called squamous cells.) - the primary cell types found in the epidermis, the outer layer of skin.

keratitis - inflammation of the cornea.

keratoacanthomas - round, flesh-colored growths with craters that contain a pasty material.

keratosis pilaris - a common skin condition characterized by small, pointed bumps, especially on the back and sides of the upper arms.

ketoacidosis - high blood glucose, often caused by illness or taking too little insulin.

ketone - break down product of fat that accumulates in the blood as a result of inadequate insulin or inadequate calorie intake.

kidney stone - a solid piece of material that forms from crystallization of excreted substances in the urine.

kidney transplantation - a procedure that places a healthy kidney from one person into a recipient's body.

kidneys - a pair of bean-shaped organs located below the ribs toward the middle of the back.

knee reconstruction - surgical restoration of the knee.

kyphosis - a forward curvature of the back bones (vertebrae) in the upper back area, giving a "humpback" appearance.

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