Uncommon pathological findings in sural nerve biopsy from a patient with Churg-Strauss related multiple mononeuropathy

We describe a patient with severe multiple mononeuropathy associated with hypereosinophilia, asthma and pulmonary non cavitating micronodules. Sural nerve biopsy revealed marked perineural thickening and microfasciculation with inflammatory infiltrates in the perinerium and in the epinerium. The patient markedly improved with steroid therapy. Our final diagnosis was Churg-Strauss related multiple mononeuropathy. Thus, we report a case of Churg-Strauss related multiple mononeuropathy with uncommon pathological findings on sural nerve and we underline the importance of clinical evaluation for this diagnosis.