Figure 4.

A retroperitoneal mass around the left internal iliac artery. A: Fibrotic nodules approximately 2 cm in diameter are seen. B: Fibrosis and dense inflammatory cells are patchily distributed around the peripheral nerves, and obliterative phlebitis is seen. C: At high magnification, infiltrates of plasma cells and eosinophils are seen.

Fujii et al. Diagnostic Pathology 2014 9:41   doi:10.1186/1746-1596-9-41
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