Histology Course S V 13k Department of Pathology, University of Zurich Histology Course

S V 13k plasmacytoma, extramedullary, testicle   IHC: Ig, LK kappa further information (German) on HiPaKu
  ICD-10: C90.2; ICD-O: 9734/3

75-year-old male; several years’ history of multiple myeloma with paraprotein IgG, lambda. Multiple extramedullary foci. Resulting kidney damage. Death due to uraemia. Autopsy specimen of testis.

- Tubular atrophy
- The interstitium is full of plasmacytoid cells with typical rimmed nuclei and eccentric cytoplasm.
- The anti-kappa-antibody stain is negative.