Gingiva is a common region of inflammatory and reactive lesions. Systemic conditions, including hormonal imbalance in pregnant women, may cause exaggerated response to irritations such as calculus or infection. Therefore, more accurate assessment is necessary to achieve the best decision making
in the differential diagnosis and treatment of these patients. In this paper, we present a reactive hyperplastic lesion of endodontic origin (parulis) on the gingiva in a pregnant woman, which mimicking pregnancy tumor.