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Query: UMLS:C0029463 (osteosarcoma)
 16,637 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Florid reactive periostitis (FRP) is a benign entity, mostly involving the tubular bones of the hands and feet. It is important to distinguish FRP from malignant processes such as periosteal osteosarcoma and parosteal osteosarcoma, to give an adequate treatment and to avoid amputation of the total digit. The final diagnosis of FRP is usually based on the combination of clinical, radiological, and pathological findings. The pattern seen on the isotope bone scan can be very helpful in orienting the differential diagnosis.
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PMID:Florid reactive periostitis. 759 79

Florid reactive periostitis ossificans is a well-known benign lesion classically described in hands and feet which histopathological features can lead to a misdiagnosis of osteosarcoma. To the best of our knowledge, there is only one previous report of this lesion in a long bone. In this study we report a case of florid reactive periostitis ossificans located in the distal metaphysis of the left femur that histologically mimicked an osteosarcoma and discuss the differential diagnosis between these two entities to warn about a diagnostic pitfall.
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PMID:Long bone florid reactive periostitis ossificans: a case in the distal femur mimicking osteosarcoma. 1884 Oct 64

Florid-reactive periostitis, also known as fibroosseous pseudotumor, is a benign bone lesion. It occurs rarely among pediatric patients. Usually, it affects the phalanges of the hands and feet, where most lesions concern the proximal phalanx. Girls are more commonly affected than boys. The lesion appears benign radiographically but on histologic examination could be mistaken for a variety of malignant lesions, especially osteosarcoma. Therefore, histologic evaluation is a must for distinguishing this benign lesion from malignant and infectious etiologies. We present 2 patients with florid periactive periostitis of the phalanges who were treated in our clinic. After physical and microscopy examination of the soft and bone tissues, we found no evidence of malignant process. Because of a definitive diagnosis and the benign nature of the histologic findings, a conservative treatment, that is, no surgical intervention, with a close supervision of our patients was used. During follow-up observations in both patients, we did not notice any limitations of finger movements or an enlargement of the tumor. These findings confirmed that for cases with no aggressive growth, a conservative treatment may be effective and beneficial for a patient.
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PMID:Florid-reactive periostitis of the phalanges: a 2-case report. 2232 52

Florid reactive periostitis ossificans is a rare benign lesion usually affecting the tubular bones of the hands and feet, and its histological features may be confused with those of infection and osteosarcoma. We report a case with florid reactive periostitis ossificans of the femur showing increased tracer uptake on both Tc-MDP bone scan and F-FDG PET/CT mimicking a local recurrence in a 15-year-old patient with high-grade osteosarcoma.
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PMID:(99m)Tc-MDP- and (18F)-FDG-avid florid reactive periostitis ossificans mimicking recurrent osteosarcoma. 2360 97