Placental site nodule
A placental site nodule is benign remnant from a previous pregnancy.
Presentation
They are typically asymptomatic and found incidentally.Pathology
PSNs are intermediate trophoblastic remnants.Diagnosis
PSNs are diagnosed by examining the tissue under a microscope, usually obtained with a dilation and curettage.Typically, they consist of pink material using the standard stain and contain few cells. Bizarre multinucleated cells may be present; however, there is no mitotic activity. The differential diagnosis includes squamous cell carcinoma, gestational trophoblastic disease, and exaggerated placental site.