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Lymphogranuloma venereum (LGV) is a sexually transmitted infection endemic in Central Africa, South-East Asia and in some countries of Central and South America. In Italy LGV has been sporadically reported in patients coming from abroad. The etiological agent of LGV is Chlamydia trachomatis serovars L1, L2, L3, differentiating by pathogenetic action. The clinical course of LGV can be divided into three stages with a initial small papule, which may ulcerate, at the site of inoculation, followed by massive lymphadenopathy, which is usually unilateral, and eventually by lymphatic obstruction, causing elephantiasis. During 2004 a LGV ano-rectal clinical variant has been described as an erosive proctitis among homosexual HIV-positive men in some countries of Western Europe, not coming from endemic areas. Until now this syndrome has been often explained as chronic intestinal inflammatory disease. This report describes a case of proctitis caused by CT serovar L2; to Authors' knowledge this is the first case reported in Italy