Репозиторий Университета

© 2019 Wiley Periodicals, Inc. Introduction: Sarcomas of the mandible are extremely rare tumors, with osteosarcoma being the most common, followed by Ewing's sarcoma. Materials and methods: A retrospective review of the clinical records, imaging studies, and pathology slides of patients with sarcoma of the mandible at a Tertiary Care Cancer Center from 1998 to 2014 was undertaken. The impact of neoadjuvant chemotherapy and postoperative radiotherapy with or without chemotherapy was studied, and factors impacting upon local control and disease-specific survival were analyzed. Results: Twenty-two patients were treated over the study period, comprising of 15 males and seven females. External swelling, intraoral growth, or facial numbness were the presenting symptoms. Eighteen patients had osteosarcoma and four had the Ewing's sarcoma. Nine patients received neoadjuvant chemotherapy. All but one patient underwent surgery. Eleven had negative margins, with 90% recurrence-free survival at 3 years, compared to 10 with positive or close margins, leading to 67% recurrence-free survival. None of the patients receiving neoadjuvant chemotherapy developed recurrence and all were alive at 3 years. The impact of postoperative radiotherapy or adjuvant chemotherapy was not statistically significant. Conclusions: Wide surgical resection with negative margins remains the hallmark of surgical treatment.

© 2018 Publishing House of the Union of Pediatricians. All rights reserved. Background. Solid tumors in children are one of the most common childhood malignancy, second only to hemoblastosis. Among solid tumours, about 5% are bone sarcomas: osteosarcoma (3%) and Ewing's sarcoma (2%). Atypicality of the these diseases course makes an early diagnosis a real challenge. Case Reports. The article presents six clinical observations of patients with bone sarcomas. We demonstrate the difficulties in diagnosing of this disease group which is associated with the absence of both specific symptoms and distinct clinical picture. Conclusion. Pediatricians and pediatric surgeons should take into account the possibility of atypical course of bone sarcomas in children. Low cancer alertness is the reason for a significant delay in establishing the correct diagnosis which contributes to the tumour process generalization and reduces the chances of achieving remission while increasing the cost of treating such patients.

© 2018 National Academy of Pediatric Science and Innovation. All rights reserved. Solid tumors in children occupy the second place in the structure of morbidity, yielding to hemoblastosis. Among solid tumors, approximately 5% are bone sarcomas: osteosarcoma (3%) and Ewing's sarcoma (2%). Atypicality of the course of these diseases makes it difficult to diagnose them early. The article describes a series of clinical observations of patients with bone sarcomas, which illustrate the complexity of diagnosing diseases of this group.