Person: ÇELEBİLER, ÖZHAN BEKİR
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ÇELEBİLER
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ÖZHAN BEKİR
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Publication Open Access Evaluation of residual tumors and recurrence rates of malignant melanoma and non-melanoma skin cancer of head and neck region(MARMARA UNIV, FAC MEDICINE, 2019-10-31) SAÇAK, BÜLENT; Durmus Kocaaslan, Fatma Nihal; Alakus, Ali Conor; Sacak, Bulent; Celebiler, OzhanObjective: In this study, we aimed to evaluate residual tumors and recurrence rates of malignant melanoma (MM) and a nonmelanoma skin cancer of (NMSC) head and neck region. Patients and Methods: Medical data of a total of 398 lesions of 323 patients who underwent surgical excision for a basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and malignant melanoma (MM) were retrospectively analyzed. All patients were classified according to age, sex, location of the tumor, histopathological diagnosis, lesion diameter, excision diameter, surgical margin status, and residual lesions and recurrence rates. Results: There were 244 lesions (61.3%) in 189 males and 154 lesions (38.7%) in 134 females. The most common type of skin cancer was BCC in 268 lesions (67%), followed by SCC in 122 (31%), and MM in eight (2%), respectively. Recurrence was seen in 3% of the NMSC cases and in 25% of the MM cases. There was a statistically significant correlation between the histopathological diagnosis and recurrence rates. Compared to NMSC, MM cases had a higher risk for recurrence (p=0.029). Conclusion: Our study results suggest that recurrence is associated with the localization and type of the tumor, but not with the age or sex of the patient.Publication Open Access Management of palatal fistulas and a simple surgical algorithm proposal(MARMARA UNIV, FAC MEDICINE, 2020-01-31) DURMUŞ KOCAASLAN, FATMA NİHAL; Kocaaslan, Fatma Nihal Durmus; Memic, Zuhra; Yalcin, Dogus; Celebiler, OzhanObjectives: Despite improved techniques in repair of cleft palate, failure of healing of palatal structures resulting in a palatal fistula is one of the major challenges in the practice of reconstructive surgery. The aim of this study is to evaluate treatment success and failure in patients with palatal fistulas following cleft palate repair. Patients and Methods: Totally 44 patients with a history of cleft palate who underwent surgery for palatal fistula were included in this study undertaken between January 1999 and August 2014. Fistulas were classified as anterior and posterior according to the repair technique and were repaired using one of the following techniques: buccal mucosal flap, tongue flap or mucoperiosteal flap. Results: Success rate for anterior fistulas was 71.42% with tongue flap and 76.92% with mucoperiosteal flap. Success rate for posterior fistulas was 84.62% with mucoperiosteal flap and 75% with buccal mucosal flap. Difference in success rates between the anterior and posterior fistulas was not statistically significant. Conclusion: Our study results suggest the use of mucoperiosteal flaps for both anterior and posterior fistulas smaller than 5mm as the first choice, guided by the principle of replacing absent tissue with similar tissue.Publication Open Access Nasopharyngeal Placement of a Nelaton Suction Catheter in Respiratory Monitoring of Sedated Patients(OXFORD UNIV PRESS INC, 2016-03) DURMUŞ KOCAASLAN, FATMA NİHAL; Kocaaslan, Nihal Durmus; Tuncer, Fatma Betul; Ayanoglu, Hilmi Omer; Celebiler, OzhanPublication Open Access Assessment of Tissue Perfusion Following Conventional Liposuction of Perforator-Based Abdominal Flaps(KOREAN SOC PLASTIC & RECONSTRUCTIVE SURGERY, 2017-03-15) SAÇAK, BÜLENT; Dogan, Zeynep Deniz Akdeniz; Sacak, Bulent; Yalcin, Dogus; Pilanci, Ozgur; Tuncer, Fatma Betul; Celebiler, OzhanBackground The effect of liposuction on the perforators of the lower abdominal wall has been investigated in several studies. There are controversial results in the literature that have primarily demonstrated the number and patency of the perforators. The aim of this study was to determine the effect of liposuction on the perfusion of perforator-based abdominal flaps using a combined laser-Doppler spectrophotometer (O2C, Oxygen to See, LEA Medizintechnik). Methods Nine female patients undergoing classical abdominoplasty were included in the study. Perforators and the perfusion zones of the deep inferior epigastric artery flap were marked on the patient's abdominal wall. Flap perfusion was quantitatively assessed by measuring blood flow, velocity, capillary oxygen saturation, and relative amount of hemoglobin for each zone preoperatively, after tumescent solution infiltration, following elevation of the flap on a single perforator, and after deep and superficial liposuction, respectively. Results The measurements taken after elevation of the flap were not significantly different than measurements taken after the liposuction procedures. Conclusions The liposuction procedure does not significantly alter the perfusion of perforator-based abdominal flaps in the early period. The abdominal tissue discarded in a classic abdominoplasty operation can be raised as a perforator flap and has been demonstrated to be a unique model for clinical research.Publication Open Access Primary Cutaneous Adenoid Cystic Carcinoma(2020) KESKİN ÖZTÜRK, BEYZA; Caner KAYA;F. Nihal DURMUŞ KOCAASLAN;Zeliha Leyla CİNEL;Beyza KESKİN;Özhan ÇELEBİLERAdenoid cystic carcinoma is a malignant tumor usually localized in the salivary glands. It can also develop in serous glands such as the breast, main bronchi, uterine cervix, Bartholin's gland of the vulva, prostate gland, and external auditory canal. It is more common in the white race. Most of the primary cutaneous adenoid cystic carcinoma cases occur on the scalp. Despite the high rate of metastasis, long-term survival can be observed because the progression of the disease is slow. Distant organ metastases such as lungs, bone, liver and brain have also been reported in the literature at 40%. Its treatment is wide excision of the lesion and demonstration of tumor negative margin in pathological sampling. In this case report, we wanted to present surgical and oncological treatment to a 65-year-old female patient with lung metastasis diagnosed with adenoid cystic carcinoma on the scalp.Publication Open Access Comparison of different treatment techniques in the mandibular condyle fracture(TURKISH ASSOC TRAUMA EMERGENCY SURGERY, 2020) DURMUŞ KOCAASLAN, FATMA NİHAL; Kocaaslan, Nihal Durmus; Unal, Beyza Karadede; Ozkan, Melekber Cavus; Karadede, Bersan; Celebiler, OzhanPublication Open Access 3D evaluation of the effects of traumatic surgical techniques on Vomer bone volume and morphology in the treatment of lip and palate clefts(2022-02-01) ÇELEBİLER, ÖZHAN BEKİR; DURMUŞ KOCAASLAN, FATMA NİHAL; Unal B. K., Kocaaslan N. D., Karadede B., ÇELEBİLER Ö. B.BACKGROUND: Cleft lip/palate (CLP) deformity is the most common congenital facial anomaly. In this study, it was aimed to evaluate the changes in volume and shape of Vomer bone after CLP repair surgery. METHODS: The images of a total of 30 patients aged between 9 and 12 years which were recorded with computed tomography were retrospectively analyzed. The patients were divided into three groups: No syndrome, operated for unilateral CLP group (n=10), no syndrome, operated for bilateral CLP group (n=10), and control group (n=10) with no syndrome, no operation history, or no lip/ palate deformities. Data of the patients were transferred to a software program and a new three-dimensional image was created for the Vomer. RESULTS: There was no statistically significant difference in the Sella-Nasion lengths, Vomer base lengths, and Vomer vertical lengths among the three groups. However, the Vomer bone volume of the patients with bilateral CLP was found to be statistically significantly higher than the control group. CONCLUSION: We can conclude that more bone formation may be observed due to the periosteal reaction following bilateral Vomer flap elevation or during maxillary growth, tension on the palatal flap may be increased new bone formation by pulling the bilateral Vomer flap if it is elevated and sutured palatal mucoperiosteal flap in the early period. Our findings have led us to the conclusion that size and volume of the Vomer bone can be significantly affected by environmental factors. According to the functional matrix theory, scar tissue formation and lack of Vomer-maxilla fusion cannot stimulate the further development of the anterior cranial bones, leading to shorter anterior cranial base.