case_images: PMC4411814_01
case_images: (a and b) Computed tomography with contrast of neck showing a large enhancing well circumscribed solid calcified mass lesion on right side of neck extending from C2 to D2 vertebral level
case_images: JLP-7-61-g001.jpg
case_images: PMC4411814_01_JLP-7-61-g001.jpg
case_images: F1
case_images: Plain and contrast computed tomography scan of neck revealed a large enhancing calcified well-circumscribed solid mass lesion (75 x 65 mm) mm on the right side deep to sterno-cleido-mastoid muscle extending from C2 to D2 vertebra with mass effect over right lobe of thyroid and right sided great vessels [Figure 1a and b].
case_images: Gross appearance of amyloidoma, showing well circumscribed but un-encapsulated brown colored tumor mass
case_images: JLP-7-61-g002.jpg
case_images: PMC4411814_01_JLP-7-61-g002.jpg
case_images: F2
case_images: The mass was un-encapsulated, but fairly well-circumscribed [Figure 2].
case_images: (a) The section showing amorphous eosinophilic deposit of amyloid and exuberant giant cell reaction around the deposit (H and E, x400). (b) The extracellular amyloid deposit show negative staining with Van Gieson stain (x100). (c) Extra cellular amyloid material staining positively with Congo red (x400). (d) The deposit is showing faint apple-green birefringence on polarization (x400)
case_images: JLP-7-61-g003.jpg
case_images: PMC4411814_01_JLP-7-61-g003.jpg
case_images: F3
case_images: The material was intensely congophilic and showed a characteristic "apple-green" birefringence of amyloid [Figure 3a-d].