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Πέμπτη 21 Σεπτεμβρίου 2017

Diaphyseal tuberculosis - a rare manifestation

DESCRIPTION

A 2 year old child presented with low-grade fever, progressive pain and swelling of right leg for the past 3 months. There was no history of injury, chronic cough, respiratory symptoms, weight loss or arthritis. Child's father had been treated for pulmonary tuberculosis 1 year back. On examination, there was a firm, diffuse, tender swelling over the medial aspect of middle one-third of right tibia and matted inguinal lymphadenopathy. Rest of the systemic examination was not contributory. A clinical diagnosis of diaphyseal bone tumour or chronic infective osteomyelitis was considered.

Investigations showed erythrocyte sedimentation rate 46 mm in first hour, haemoglobin 96 g/L and 20 mm induration after Mantoux test and normal chest radiograph. Radiograph of the right tibia showed a lytic intramedullary bone lesion (Figure 1A–B). MRI confirmed an intramedullary lytic lesion with cortical breach and thickening (figure 1C). Histopathology showed caseous necrosis, granuloma formation, Langhans giant cells...



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