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Abstract: Low grade central osteosarcoma is a rare primary bone tumor. This fibro-osseous lesion shares some radiological and histopathological resemblance with fibrous dysplasia, which is a more common entity. Thus it may be mistaken as fibrous dysplasia and may receive inadequate treatment resulting in a more malignant recurrent bone tumor. We present a case of low grade central osteosarcoma of the right tibia, which was initially treated as fibrous dysplasia with curettage and bone grafting. Three years later the tumor recurred with greater soft tissue and bony involvement but without metastasis. The patient was treated with above knee amputation and has been asymptomatic for the last two years. [Copyright &y& Elsevier]

Résumé: L’ostéosarcome central de faible malignité est une tumeur osseuse primitive rare. En raison de certaines caractéristiques radiographiques et histologiques communes, cette tumeur fibro-osseuse peut être confondue avec la dysplasie fibreuse (lésion osseuse bénigne plus fréquente) et entraîner un traitement inadapté, à l’origine d’une récidive tumorale osseuse de malignité plus élevée. Nous présentons le cas d’un ostéosarcome central de faible malignité du tibia droit, initialement traité comme une dysplasie fibreuse par curetage et greffe osseuse. Trois ans plus tard, la tumeur a récidivé avec un envahissement plus important des parties molles et de l’os, mais sans dissémination métastatique. Le patient a été traité par une amputation au-dessus du genou. Il est resté asymptomatique au cours des deux dernières années. [Copyright &y& Elsevier]

Abstract: Spinal tuberculosis constitutes 50% of all musculoskeletal tuberculosis. However, literature regarding congenital spinal tuberculosis is very scanty. Congenital spinal tuberculosis was diagnosed in a two-month-old child on the basis of age at presentation (gibbus since three weeks of age), hepatomegaly, raised ESR, radiological destruction of D10–D11 vertebrae, asymptomatic maternal endometrial tuberculosis and tuberculous histopathology from CT guided biopsy specimen from D10 vertebra. Both child and mother were treated by antitubercular treatment. Child improved symptomatically, gibbus became less prominent and ESR became normal at the end of one year of treatment. Patient had no recurrence during last two years of follow-up. This is the first case of congenital tuberculosis of spine with a documented source of infection from asymptomatic maternal endometrial tuberculosis. CT guided core biopsy from vertebra/aspiration from the paravertebral abscess help in early diagnosis and treatment to reduce neurological morbidity and mortality. Endometrial biopsy help in establishing the diagnosis of congenital tuberculosis and adequate antitubercular treatment in such cases may provide protection to fetus in subsequent pregnancy. [Copyright &y& Elsevier]