Symptoms in these patients include recurrent, brief episodes of loose, foul-smelling stools. The vast majority of men who get HIV get it through anal sex. Updates all chapters to include the latest references, concepts, data, and controversies. Incorporates expanded coverage of the pancreas and liver, eliminating the need for a separate text. And although you already seem aware, it is important to mention that STIs, including HIV, can be passed to or from an anal sex partner, so using condoms is always a good idea. Are there any risks involved with anal sex that are not involved with oral or vaginal? This is because the lining of the rectum is not as heavy as the lining of the vagina, so it is more susceptible to tears. The material should be examined both as a wet mount and as a permanent stain. Most gay men with amebiasis are asymptomatic. Five new chapters, additional expert authors, expanded tables, and coverage of the current clinical approach to management and treatment options, particularly screening and surveillance recommendations for preneoplastic disorders, round out this unique reference. The trophozoites are released in the duodenum. A health care provider can make recommendations about vaccines. Treatment If giardiasis is diagnosed, the patient should be treated even if asymptomatic. Evaluation of a new monoclonal antibody combination reagent for direct fluorescence detection of Giardia cysts and Cryptosporidium oocysts in human fecal specimens. In the majority of cases, metronidazole is the drug of choice. Endoscopic biopsies generally show a range of nonspecific inflammatory changes in the colonic mucosa.