Nidus may refer to:
*
Nidus (nest), for insects or small animals
* The characteristic lesion in
osteoid osteoma
An osteoid osteoma is a benign (non-cancerous) bone tumor that arises from osteoblasts and some components of osteoclasts. It was originally thought to be a smaller version of an osteoblastoma. Osteoid osteomas tend to be less than 1.5 cm i ...
* The centre of a
bladder stone
A bladder stone is a stone found in the urinary bladder.
Signs and symptoms
Bladder stones are small mineral deposits that can form in the bladder. In most cases bladder stones develop when the urine becomes very concentrated or when one is d ...
* The material around which an
enterolith
An enterolith is a mineral concretion or calculus formed anywhere in the gastrointestinal system. Enteroliths are uncommon and usually incidental findings but, once found, they require at a minimum watchful waiting. If there is evidence of compl ...
forms
* The Nidus, a fictional magical object in the television series ''
Into the Labyrinth''
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