Pubic tuberculous osteo-arthritis. Apropos of 2 cases

OBJECTIVE: The authors report an exceptional site of tuberculous osteo-articular infection which must be diagnosed before the destructive stage. OBSERVATIONS: Case 1 : a 21 years old woman presented an inflammatory pubic pain after a trauma with weight loss of 4 kgs in 3 weeks. She presented also 2 satellite inguinal nodes. Erythrocyte sedimentation rate (ESR) was elevated, X-rays showed an important osteolysis of the left ischio-pubic rami, tuberculous skin test (TST) was positive, mycobacterium tuberculosis (MT) could not be found neither in sputtum nor in urine but the node biopsy showed the specific features of tuberculosis. Evolution under a 6 months antibiotic treatment was good. Case 2 : a 19 years old woman, with history of tuberculous contagion, presented in April 1996 cervical nodes and a month later inflammatory pubic and knee pain with weight loss and vesperal sudation. ESR was elevated, TST was phlyctenular, MT searching and HIV serology were negative. X rays showed irregular osteolysis of the pubic symphysis. Scintigraphy showed an increased fixation of pubis and left knee. Cervical nodes biopsy diagnosed tuberculosis. Evolution was good under a 6 months antibiotic treatment. DISCUSSION: Many factors can favorize the development of a pubic tuberculosis and are similar for all forms of tuberculous osteo-articular infection (trauma and contagion in our cases). Radiological features, characterized by a slow evolution, are note specific. Diagnostic confirmation must be bacteriologic or pathologic, and if possible far from the pubic foci. Any traumatic medical procedure has to be avoided because of painful outcome and local risk. Evolution under specific treatment, even of short course (6 months), is sufficient for a good outcome. CONCLUSION: One must think to pubic tuberculous osteo-arthritis in any pubic pain even if it is post-traumatic especially, in endemic countries of tuberculosis.