Abstract
In spite of generalization of anti-tuberculous drugs, there are considerable number of patients of bone and joint tuberculosis seen on our clinic. Patient was 37-year-old male, who was seen to our clinic complaining pain and swelling on his left knee.
At first, he was diagnosed as gonitis serosa and chronic suppurative osteomyelitis of the left tibia, and was asked to undergo an operation to the tibia, but left it to its natural course. About two months later, swelling appeared on his left popliteal region and became more severe day by day, So, extirpation of the tumor was done to the popliteal region and curettage and auto bone graft were to the tibia. The tumor emerged from between tendinous portion of the medial gastrocunomius muscle and the semimembranosus muscle as was seen in an ordinary popliteal cyst. In the tumor there are much cheese material and yellow serous fluid. Histologically typical tuderculous granulation tissue consisted of Langhans' cells and epitheloid cells were found out.
