case_images: PMC7337270_01
case_images: Histopathology of the biopsy specimen of the right cervical lymph node.. Monotonous infiltration of medium to large-sized lymphoma cells is observed
  (A, low-power field; B, high-power field.
  Hematoxylin-eosin staining). Immunohistochemistry shows that the lymphoma cells are
  CD3-positive (C), CD20-negative (D) and CCR4-positive
  (E).
case_images: jslrt-60-62-g001.jpg
case_images: PMC7337270_01_jslrt-60-62-g001.jpg
case_images: f1
case_images: Biopsy specimens of cervical lymph nodes and abdominal skin exhibited monotonous infiltration of medium to large-sized lymphocytes with a phenotype of CD3+, CD5+, CD10-, CD20-, CD79a-, CD30-, CD56-, Bcl6-, granzyme B-, CD45RO-, CCR4+ and TdT-. (Figure 1A-E) The Ki-67 labeling index was 80%.
case_images: Thoracolumbar MR images: T2-weighted image (A) and
  contrast-enhanced sagittal fat-saturated T1-weighted images
  (B, C).. On the T2-weighted image, the CSF signal surrounding the conus medullaris is effaced.
  Red triangles: The leptomeningeal linear or nodular enhancement,
  corresponding to the intramedullary mass.
case_images: jslrt-60-62-g002.jpg
case_images: PMC7337270_01_jslrt-60-62-g002.jpg
case_images: f2
case_images: On day 25, an intradural extramedullary mass was detected on thoracolumbar MRI, suggesting infiltrated lymphoma (Figure 2).