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Incidentaloma

An incidentaloma is a radiological neologism to denote a mass lesion found incidentally and of dubious clinical significance. Although it can refer to any incidental lesion (e.g. pituitary 3, thyroid 4), it is most often used to denote an incidental adrenal lesion, which is commonly an adrenal adenoma 1. Colloquially, some radiologists use the term interchangeably with adrenal adenoma, although clearly its use in a report would be confusing, and should be avoided. 

The likelihood of an incidental adrenal lesion being malignant is most strongly determined by the presence or absence of a malignancy elsewhere. In cases where a malignancy is present up to 27% of incidental adrenal lesions represent adrenal metastases 6

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