Figure Legends:
Figure 1 Histopathologic assessment of peroneal nerve biopsy; Sections
show unremarkable nerve bundles. Adjacent vessels are stuffed with large
pleomorphic lymphoid cells. Cells have a high N/C ratio and
hyperchromatic nuclei, and scant cytoplasm. Immunohistochemical(IHC)
staining shows positive reactivity for CD20, and the diagnosis was
reported as intravascular large B-cell lymphoma(CD20+).
Figure 2 (color)The abdominal skin lesion and the biopsy specimens of
abdominal skin lesions; Left: Patient’s abdomen upon examination on
follow-up two years post-presentation. The skin shows scattered
violaceous telangiectasiae and retiform purpurae. Middle and Right:
Sections show intravascular proliferation of atypical lymphocytic cells
inside the dermis. Left: Low magnification Right: High magnification.
Supplementary Figure: The case presentation timeline.