case_images: PMC4531616_01
case_images: Photography shows poorly defined mass lesion at laterally to semi-membranous tendon, anterior to gastrocnemius and along joint space. This mass demonstrates low signal intensity with high signal foci on T1WI/PDWI (A) and patch peripheral enhancement on Gadolium-enhanced T1WI (B, C).
case_images: kjim-18-2-119-10f1.jpg
case_images: PMC4531616_01_kjim-18-2-119-10f1.jpg
case_images: f1-kjim-18-2-119-10
case_images: Ultrasonography and magnetic resonance image (MRI) around the right knee showed a poorly defined mass lesion laterally to the semi-membranous tendon, anteriorly to the gastrocnemius muscle on the right leg (Figure 1).
case_images: Microphotography shows prominent caseous necrosis and surrounding granuloma composed of epitheloid histiocytes and inflammatory cells (big box). The AFB stain shows Mycro-bacterium organisms (arrows, small box).
case_images: kjim-18-2-119-10f2.jpg
case_images: PMC4531616_01_kjim-18-2-119-10f2.jpg
case_images: f2-kjim-18-2-119-10
case_images: Pathologic findings of the specimen disclosed caseous central necrosis surrounding the granuloma (Figure 2).