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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 ]
Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.
One of the most notable scientific papers that first popularized hydroxychloroquine as a COVID-19 treatment was retracted from its journal due to ethical and methodological issues. Retractions in ...
A rhinolith (from rhino- 'nose' and -lith 'stone') is a stone present in the nasal cavity. It is an uncommon medical phenomenon, not to be confused with dried nasal mucus. A rhinolith usually forms around the nucleus of a small exogenous foreign body, blood clot or secretion by slow deposition of calcium and magnesium carbonate and phosphate ...
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Virologist Didier Raoult championed the anti-malaria drug hydroxychloroquine as a coronavirus treatment but was accused by peers of spreading false information about the benefits of the drug, and ...
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 ...
Human-to-human transmission of SARS‑CoV‑2 was confirmed on 20 January 2020 during the COVID-19 pandemic. [ 16 ] [ 39 ] [ 40 ] [ 41 ] Transmission was initially assumed to occur primarily via respiratory droplets from coughs and sneezes within a range of about 1.8 metres (6 ft).