[Lymphogranuloma venereum: new serovariant L2b and old "groove sign"]. / Lymphogranulomatose vénérienne : nouveau sérovariant L2b et ancien "signe de la poulie".

An ongoing lymphogranuloma venereum (LGV) outbreak has been reported in several European countries since 2003, related to a new variant L2b. This serovar appears to affect men who have sex with men (MSM), most of them being co-infected with the Human Immunodeficiency Virus (HIV). The secondary stage of LGV may involve lymph nodes and the inguinal form has sometimes been described on each side of the inguinal ligament thus named the "groove sign". We report the case of LGV serovariant L2b acquired by an heterosexual intercourse in an HIV seronegative patient who presented with an inguinal lymph node and a "groove sign". This is an uncommon but suggestive sign of LGV and we suggest that the clinical presentation of L2b LGV might not be so different than other variants and than the 20th century authors' description. Such a new Chlamydia trachomatis variant may circulate in other populations than MSM in Europe and clinical awareness must prevail.

[Pelvic hydatid cyst: differential diagnosis with a bacterial abscess with cutaneous fistula]. / Kyste hydatique pelvien : diagnostic différentiel d'un abcès bactérien fistulisé

The genus Echinococcus is a worldwide tapeworm with a two host mammalian cycle. Among the six described species, Echinococcus granulosus (EG) and Echinococcus multilocularis are the most important in respect to their public health importance. Infected human, as an intermediate accidental host, presents single to several cysts, mainly located in the liver. We are describing the clinical, radiological and histological findings of a woman born in Morocco, recently arrived in France and presenting a pelvic hydatid cyst. The misknowledge of such a diagnosis conducted to initial surgery and thus a risk of further metastasised lesions. We are suggesting that any hypoechogenic pelvic lesion in a patient originated from a Mediterranean country should be considered as a pelvic localization of EG.