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An omphalolith, also known as a umbolith, omphalith, [1] navel stone, [2] or umbilical concretion [3] is a periumbilical mass that may form due to the accumulation of sebum and keratin. [4] The colour is black or brown, and may be related to the skin type of the patient. [2] It may resemble a malignant melanoma.
A calculus (pl.: calculi), often called a stone, is a concretion of material, usually mineral salts, that forms in an organ or duct of the body. Formation of calculi is known as lithiasis (/ ˌ l ɪ ˈ θ aɪ ə s ɪ s /). Stones can cause a number of medical conditions.
An umbilical hernia is a health condition where the abdominal wall behind the navel is damaged. It may cause the navel to bulge outwards—the bulge consisting of abdominal fat from the greater omentum or occasionally parts of the small intestine. The bulge can often be pressed back through the hole in the abdominal wall, and may "pop out" when ...
Although unusual, it is possible to have a common bile duct stone despite prior cholecystectomy. One study found that in patients diagnosed with choledocholithiasis, 28% had undergone prior cholecystectomy. Such stones are thought to be the result of stones missed at the time of the cholecystectomy, as opposed to the formation of new stones. [3]
The belly button is unique to each individual due to it being a scar, and various general forms have been classified by medical practitioners. [6] [7] [further explanation needed] Outie: A navel consisting of the umbilical tip protruding past the periumbilical skin is an outie. Essentially any navel which is not concave.
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Kidney stone disease, also known as renal calculus disease, nephrolithiasis or urolithiasis, is a crystallopathy where a solid piece of material (renal calculus) develops in the urinary tract. [2] Renal calculi typically form in the kidney and leave the body in the urine stream. [2] A small calculus may pass without causing symptoms. [2]
Functionally, the subcutaneous fat insulates the body, absorbs trauma, and serves as a reserve energy source. [14] Conditions of the human integumentary system constitute a broad spectrum of diseases, also known as dermatoses, as well as many nonpathologic states (like, in certain circumstances, melanonychia and racquet nails).