1. Retained products of conception. Histologic viability of placental polyps;Swan;Obstet Gynecol,1969
2. Placental polypus which simulated malignant disease of the uterus;Baer;Philadelphia Med Times,1884
3. Late puerperal hemorrhage due to placental polyp;Hagstrom;Am J Obstet Gynecol,1940
4. Placental polyp with severe late puerperal hemorrhage;Dorsey;Am J Obstet Gynecol,1942
5. Case records of the Massachusetts General Hospital: Weekly clinicopathologic exercises. Case No. 33162,1947