case_images: PMC11756988_01
case_images: (A and B) Chest CT (mediastinal window) shows a uniform, well-defined mass measuring approximately 40 mm in length near the vertebral body of the seventh thoracic vertebra. (C) Chest MRI (T1WI) shows a mass adjacent to the pleura with signal intensity comparable to muscle. (D) Chest MRI (T2WI) shows the edges were high-signal. (E) Chest MRI (diffusion weighted images) shows diffusion restriction around the limbus of the mass. (F) Chest MRI (Contrast-enhanced T1WI) shows strong, homogeneous enhancement of the mass.
case_images: RCR2-13-e70099-g002.jpg
case_images: PMC11756988_01_RCR2-13-e70099-g002.jpg
case_images: rcr270099-fig-0001
case_images: The mass was in contact with the pleura and thoracic vertebrae but it did not extend into the intervertebral foramen (Figure 1A,B). T1-weighted images (T1WI) showed a mass with muscle-like consistency that was in contact with the pleura (Figure 1C). T2-weighted images (T2WI) showed that it had high signal, especially at the margins (Figure 1D). Diffusion-weighted images showed diffusion restriction around the limbus (Figure 1E), and contrast-enhanced T1WI showed strong contrast of the mass (Figure 1F).
case_images: (A) Histopathology examination of the surgical specimen (haematoxylin and eosin stain) shows a marked increase in the vascular components between lymphoid follicles; magnification: x40. (B) Lymph follicular formation is inconspicuous, with scattered onion-skin structures reflecting mantle layer development; magnification: x200.
case_images: RCR2-13-e70099-g003.jpg
case_images: PMC11756988_01_RCR2-13-e70099-g003.jpg
case_images: rcr270099-fig-0002
case_images: There was no atypia in the small lymphocytes, and no increase in plasma cells (Figure 2).