Heavy parasitic loads may lead to rectal prolapse or perianal irritation. Macroscopic pathology will show thickened GI tract and pinworms are recognised as white hair-like nematodes in the cecum. | Heavy parasitic loads may lead to rectal prolapse or perianal irritation. Macroscopic pathology will show thickened GI tract and pinworms are recognised as white hair-like nematodes in the cecum. |