case_images: PMC2698087_01
case_images: MR imaging of the right proximal leg. Axial T1-weighted (A) and T2-weighted (B) MR images depict a well-circumscribed, elliptical mass (arrows) with a central, fusiform, fluid-filled cavity in the deep subcutaneous layer of the right proximal leg. Note the wavy, low-signal-intensity structures (arrowhead) in the central cavity, representing the gauze fibers.
case_images: kjr-4-191-g001.jpg
case_images: PMC2698087_01_kjr-4-191-g001.jpg
case_images: F1
case_images: Because the mass was thought to be a soft-tissue tumor, MRI was performed; spin-echo T1-weighted (TR/TE: 419/17.8) and fast spin-echo T2-weighted (TR/TE: 1876/90) images revealed an elliptical, well-circumscribed mass in the anterolateral aspect of the right proximal leg, abutting the crural fascia (Figs. 1A, B).
case_images: Gross pathologic specimen shows a well-encapsulated mass with a fusiform central cavity. The gauze fibers (arrows) are clearly depicted.
case_images: kjr-4-191-g002.jpg
case_images: PMC2698087_01_kjr-4-191-g002.jpg
case_images: F2
case_images: At surgery, a well-encapsulated, brownish soft-tissue tumor containing serous fluid was discovered in the central cavity; examination of a cross-sectional specimen revealed the presence of fiber-like material, shown at histological investigation to be gauze fibers (Fig. 2).
case_images: Microscopic examination of the tumor revealed fibrosis, and lymphocyte and giant cell infiltration had occurred. Note the presence of giant cells, which phagocytosed the gauze fibers (arrow).
case_images: kjr-4-191-g003.jpg
case_images: PMC2698087_01_kjr-4-191-g003.jpg
case_images: F3
case_images: Microscopically, the tumor showed granulomatous inflammation, with fibrosis, lymphocyte infiltration, and giant cell reaction (Fig. 3).