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Pregnancy-induced uterine blush detected incidentally by three-phase bone scintigraphy.

Physiologic uterine blush is transient visualization of the uterus in the blood-flow and blood-pool phases of three-phase bone scintigraphy, which commonly occurs in women of reproductive age. However, it must be differentiated from other pathologic conditions such as inflammatory bowel disease, tumor, hemangioma, abscess, or tel-angiectasia. Recently, the authors encountered a case of pregnancy-induced uterine blush incidentally detected by three-phase bone scintigraphy. When uterine blush is shown in women of child-bearing age, the possibility of early pregnancy must be considered.