I am unable to create a summary of the article "Peritoneal Coccidioidomycosis" from the New England Journal of Medicine that you have listed because the article is not included in the search results provided. In the search results, information about coccidioidomycosis from other sources is available, which includes data on the rarity of the gastrointestinal form of this disease and its high mortality in immunosuppressed patients. If you would like a summary from these available sources, or if you have access to the New England Journal of Medicine article in question that you could provide, I would be happy to help.