Abstract
Introduction and Aims: Solitary osseous lesions of tuberculosis are uncommonly reported in children. Historically, bone lesions were predominantly of the multifocal and disseminated type. The aim of this paper is to describe the protean radiological manifestations of tuberculosis in sites other than the spine and synovium, and their resemblance to benign and malignant bone lesions.
Method: Forty-nine children, aged 1–12 years with histologically confirmed osseous lesions of tuberculosis, were reviewed between 1984 and 2001. Symptoms ranged from two weeks to three months. There were a total of 59 lesions. Forty-three children had solitary, and six had multifocal lesions. Thirty lesions were in the metaphyses, six in the diaphyses and five in the epiphyses. The remainder were in the small and flat bones. Four basic patterns of bone lesions were seen. The majority were cystic in type (34), infiltrative (10), focal erosions (nine) and spina ventosa lesions (6). Several bone lesions resembled pyogenic and fungal osteomyelitis, osteoid osteoma, benign and malignant bone tumors. All patients had biopsy with curettage.
Results: Follow-up ranged from nine months to 12 years (average 3.5). All lesions showed clinical and radiological healing by three to six months following anti-tuberculous treatment with rifampicin, isoniazid and pyrazinamide. Cystic lesions healed with slight marginal sclerosis in 12 patients. Growth disturbance was seen in six children with residual shortening of 1–3cm. Avascular necrosis of the femoral head was seen in three hips and coxa vara in two others. Six patients had joint contracture of 100–300. Good remodelling of cystic and spina ventosa lesions was seen in all patients.
Conclusion: The lack of familiarity with the spectrum of bone lesions in tuberculosis can lead to delay in diagnosis. The clinical and radiological manifestations of tuberculosis appears to be changing. Destructive and infiltrative lesions are less commonly encountered. Solitary lesions can mimic various benign and malignant conditions. Biopsy is mandatory.
These abstracts were prepared by Editorial Secretary, George Sikorski. Correspondence should be addressed to Australian Orthopaedic Association, Ground Floor, The William Bland Centre, 229 Macquarie Street, Sydney, NSW 2000, Australia.
At least one of the authors is receiving or has received material benefits or support from a commercial source.
