Aydin Saray

Pilomatrixoma of the earlobe.

BACKGROUND Pilomatrixoma most commonly occurs in the head and neck region, appearing primarily in the first two decades of life. The lesion is described as a tumor with differentiation toward hair cells and surgical excision is the treatment of choice. OBJECTIVE We report an uncommon localization of a perforating type pilomatrixorna of 5 × 4 × 4 cm in size that developed from the earlobe. METHODS Histopathological examination revealed pilomatrixorna. Total resection of the tumor was performed. The earlobe was reconstructed by forming a posterior‐superior pedicled skin flap. RESULTS No recurrence was observed and a good cosmetic result was obtained. CONCLUSION Local recurrence does not generally occur if the tumor is completely removed. The case we present is of interest in having a history of trauma to the region and a relatively rapid growth with perforation of the overlying skin.

Malignant triton tumor of the maxilla : A patient report

Malignant Triton tumor (or malignant schwannoma with rhabdomyoblastic differentiation) is a rare entity with a very poor prognosis. This is the second report of this type of rare and aggressive sarcoma arising in the maxilla. The clinical course, therapeutic approach, and histopathological aspects of the case are presented.

Reconstruction of ureteral defects with a tubular skin graft secondarily prefabricated utilizing omentum as a carrier: an experimental study.

OBJECTIVES This study was conducted to evaluate reconstruction of the ureter in dogs after resection of a 7-cm-long midlength segment with a vascularized tubular skin graft secondarily prefabricated utilizing omentum as a carrier. METHODS Nine female mongrel dogs underwent surgery in which omental surface capabilities were used to create a vascularized prefabricated skin graft. After 4 weeks, all 9 dogs underwent the second surgical procedure, which included the resection of a 7-cm-long segment from the ureter and an interureteral anastomosis of the omentocutaneous cylindrical tube. At postoperative week 10, just before the third surgical procedure, intravenous urography was performed to evaluate the continuity of the treated ureter. Nephroureterectomy was also performed immediately after intravenous urography to obtain specimens for histologic analysis of the aforementioned tubular anastomosis. RESULTS The continuity of the ureteral defect was restored with the help of the omentocutaneous cylindrical tube. There was no narrowing throughout the ureter and along the omentocutaneous cylindrical tube. Only minimal dilation occurred at the neoskin tube and at the ipsilateral collecting system. Histopathologically, there were capillary protrusions entering the skin graft from the omental vasculature. The columnar epithelium of the cutaneous cylindrical tube was completely preserved, and transitional ingrowth was present at the proximal and distal ends of the tube. CONCLUSIONS The surgical procedure resulted in successful reconstruction of ureteral continuity by the use of a prefabricated omentocutaneous cylindrical tube in dogs.