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Osteosarcoma is the most common form of primary bone cancer in the adolescent and young adult patient population. Outcomes in patients with secondary osteosarcoma are inferior compared with outcomes in patients with primary osteosarcoma. The goal of this study was to investigate whether there is a predilection for the chondroblastic histologic subtype in secondary osteosarcoma.
View Article and Find Full Text PDF[Post-radiation dedifferentiation of meningioma into chondroblastic osteosarcoma].
Cesk Patol
January 2009
Oddelenie patológie, Fakultná nemocnica L. Pasteura, Kosice, Slovenská republika.
We report a case of post-radiation dedifferentiation of meningothelial meningioma into chondroblastic osteosarcoma. The tumor developed in a 61-year-old man, seven years after adjuvant stereotactical radiotherapy of recurring meningioma. Histologically, there was a continuous transition from atypical meningioma into chondroblastic osteosarcoma.
View Article and Find Full Text PDFMembranocystic lesion in lumbar yellow ligament.
Spine (Phila Pa 1976)
June 1999
Department of Orthopaedics, Akita University School of Medicine, Japan.
Study Design: An examination of surgical cases of membranocystic lesions in the lumbar yellow ligament between the fourth and fifth lumbar vertebrae.
Objectives: To report the incidence and pathogenesis of membranocystic lesions of the yellow ligament in surgical specimens.
Summary Of Background Data: The membranocystic lesion has been observed not only in membranous lipodystrophy, but also in other conditions.
Craniofacial osteosarcomas: plain film, CT, and MR findings in 46 cases.
AJR Am J Roentgenol
June 1988
Department of Diagnostic Radiology, M. D. Anderson Hospital and Tumor Institute at Houston, University of Texas System Cancer Center 77030.
Forty-six osteosarcomas of the cranial and facial bones were reviewed radiographically by using the conventional parameters for long bone tumors. There were 32 de novo osteosarcomas (11 maxillary, 13 mandibular, and eight cranial) and 14 postradiation osteosarcomas. All the maxillary tumors originated from the alveolar ridge, and the majority of mandibular lesions began in the body of the mandible.
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