Histopathological Comparison between Bone Marrow- and Periodontium-derived Stem Cells for Bone Regeneration in Rabbit Calvaria.

Background: Periodontitis is an important oral disease. Stem cell therapy has found its way in treatment of many diseases.

Objective: To evaluate the regenerative potential of periodontal ligament-derived stem cells (PDLSCs) and osteoblast differentiated from PDLSC in comparison with bone marrow-derived mesenchymal stem cells (BM-MSCs) and pre-osteoblasts in calvarial defects.

Intraosseous neurilemmoma of the mandible: report of a rare ancient type.

The neurilemmoma is a benign neoplasm of Schwann cell origin. One of the histopathologic subtypes of this tumor is ancient schwannoma which is characterized by degenerative alterations including cystic change, calcification, hemorrhage, and hyalinization.Intraosseous schwannomas especially ancient ones are rare tumors.

Unusual location of ovarian mixed germ cell tumor.

Intra-abdominal unusual location of mixed germ cell tumor of ovary, which consisted of endodermal sinus tumor and immature teratoma components, has been reported. Patient was a 21-year-old girl with a chief complaint of abdominal pain and mass. Ultrasound and computed tomography scan showed lobulated cystic mass.