Brown patches were found in the head of the epididymis in 66 out of 100 consecutive male necropsies. They appear to be lesions due to local obstruction of ductuli efferentes by dehydrated semen. These common lesions are probably similar to origin to sperm granulomas, and might be significant in the origin of sperm auto-antibodies; their further study might help to elucidate some of the outstanding problems of male fertility.
No takes yet. Share an insight, caveat, or question.
Mitchinson et al. (1975) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: