Abstract: Rare Case: Aneurysmal Bone Cyst in the Metacarpal of a Child

Posters (MRI). The transplanted cells were retrieved three months later. Histological assessment and glycosaminoglycan (GAG) levels of reconstructed tissue were assessed. The experimental animal protocols were approved by the Animal Welfare and Animal Care Committee of the National Institute of Biomedi-cal Innovation (Osaka, Japan) (approval ID: DS25-32). Results: Remarkable formation change was detected in both of 2 groups clinically. We also detected density difference in the MRI T1/T2 images. Elastic cartilage was detected in histological assessment, GAG levels were nearby original auricular cartilage. No complication such as inflammation and tumorigenesis were observed in any of the experiments. ConClusion: These 2 methods will be a highly promising to treat craniofacial deformities. We conclude that to use properly these methods will be needed for patient condition. Disclosure/Financial support: None of the authors has a financial interest in any of the products, devices, or drugs mentioned in this manuscript. of human elastic cartilage by a CD44+ CD90+ stem cell in the ear perichondrium. Autotransplantation of monkey ear peri-chondrium-derived progenitor cells for cartilage reconstruction .ing ears from cultured autologous auricular chondrocytes by using two-stage implantation in treatment of microtia. Duct preservation during nipple eversion surgery can be challenging. Chronic shortening of the intact ducts and ptosis from post-partum or involutional changes will predispose the patient to recurrent or persistent nipple retraction. We present a case of a 23-year old nulliparous lady with benign bilateral grade 3 nipple inversion (Han & Hong classification 1) who underwent duct-preserving nipple eversion surgery using autologous dermal scaffold grafts. Using inferior nipple-areolar junction incisions, the ducts were identified, isolated and preserved by release dissection of the inter-ductal fibrous support tissue. De-epithelialised dermal grafts were harvested from the flank. These were woven around the central ducts and fashioned into cylindrical collars. A four-point clover leaf intradermal suture provided the foundation to prevent retraction of the nipple and supporting collar. The skin was closed, and doughnut-shaped sponge dressings were applied to avoid direct pressure on the everted nipples. Although successful lactation is yet to be confirmed, she is delighted with the results and maintains excellent nipple projection at 6 months following surgery. Disclosure/Financial support: None of the authors has a financial interest in any of the products, devices, or drugs mentioned in this manuscript. intRoduCtion: Aneurysmal bones cyst is a rare, rapidly growing, and destructive benign bone tumor.