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Case Reports
. 2011 Jul;1(2):176-80.
doi: 10.4103/2231-0746.92790.

High-grade chondroblastic and fibroblastic osteosarcoma of the upper jaw

Affiliations
Case Reports

High-grade chondroblastic and fibroblastic osteosarcoma of the upper jaw

Tommaso Cutilli et al. Ann Maxillofac Surg. 2011 Jul.

Abstract

Osteosarcomas (OS) are extremely uncommon in maxillofacial region (6%-10% of all sarcomas). Jaw lesions are diagnosed on average two decades later than sarcomas of long bone, with a peak incidence between 20 and 40 years. Head and neck OS (HNOS) are associated with a lower metastatic rate than long bone OS, and they have a better 5-year survival rate, ranging between 27% and 84%. Approximately 80% of HNOS originate from soft tissues, while 20% arise from bone. The majority of OS were classified as osteoblastic HNOS (77.0%), followed by chondroblastic (15.8%) and fibroblastic (3.4%). Patients older than 60 years were more likely to be diagnosed with other histologic types compared with patients 60 years or younger. The authors describe a rare case of Stage II high-grade mixed chondroblastic and fibroblastic osteosarcoma of the upper jaw diagnosed in a subject older than 60 years. CT i.e., total body scintigraphy, radiograph of chest, and epathic ultrasonography have been executed to staging (T3N0M0). The size of the tumor >6 cm, histopathological findings, and patient older than 60 years, made necessary a multimodality therapy. Surgery (right subtotal maxillectomy with closure of surgical area by local sliding and advanced cheek flap) and adjuvant radiotherapy (for overall 6500 Gy) were the definitive treatment. Follow-up at 2 years shows no local recurrence and the patient is disease free.

Keywords: Maxilla; osteosarcoma; surgery.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
(a, b) Clinical and radiographic aspect of the tumor
Figure 2
Figure 2
(a) CT axial scan for loco-regional staging of the the tumor. A lymph-node is present in 1b level (white arrow) (b) Total body scintigraphy shows a pathological tracer in the right maxilla (black arrow)
Figure 3
Figure 3
(a) Weber-Fergusson approach. Intraoperative aspects show the tumoral mass (b) and subtotal maxillectomy (c). (d) Final view
Figure 4
Figure 4
Tumor size is greater than 6 cm
Figure 5
Figure 5
Histopathological pattern of the tumor: (a) osteoblastic proliferation (H & E, ×4); (b) High-power magnification (H & E, ×10). (c) Chondroblastic proliferation H & E, ×4; (d) High-power magnification (H & E, ×10); (e) Fibroblastic proliferation (H & E, ×4); (f) Immunohistochemical pattern (positivity for S-100 protein)
Figure 6
Figure 6
Follow-up at 2 years [(a) CT scan, (b) total body scintigraphy, (c) panoramic radiograph, and (d) clinical finding]

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