A 43 year-old female nurse with her right knee pain and slight swelling for 3 months. Her 20 year old history noted she got TB cervical lymph nodes.
Ultrasound detected a #36x35mm mass of the right lateral femoral muscle [biceps femorii] at the 1/3 lower thigh. The muscular mass has unclear border, mixed echogenic and hypovascular.
There was edema of the synovial membrane into the knee joint # 46x48 mm.
No fluid collection nor bone destruction existed of the right knee joint.
MRI confirmed the right knee mass which was between the femoral biceps and popliteal muscle but could not differentiate hemangioma, tenosynovial giant cell tumor, soft tissue sarcoma...from each others.
Core biopsy was done and the result was a TB knee soft tissue inflammation which had TB cysts composed caseum and degenerated Langhans cells and lymphocytes.
A TB treatment regimen for 8 months for the nurse was planned.
