Extrauterine endometrial stromal sarcoma with JAZF1/JJAZ1 fusion confirmed by RT-PCR and interphase FISH presenting as an inguinal tumor..     ///    We confirmed JAZF1/JJAZ1 fusion by reverse transcription-polymerase chain reaction and the corresponding chromosomal translocation by interphase fluorescence in situ hybridization on paraffin sections.     ///    "It is essential that the inguinal region should be recognized as a possible primary site of endometrial stromal sarcoma, and the detection of a JAZF1/JJAZ1 fusion can be useful when the diagnosis is not confirmed by microscopic observation or immunohistochemistry for the tumor arising in extrauterine sites.. "    ///    "It is essential that the inguinal region should be recognized as a possible primary site of endometrial stromal sarcoma, and the detection of a JAZF1/JJAZ1 fusion can be useful when the diagnosis is not confirmed by microscopic observation or immunohistochemistry for the tumor arising in extrauterine sites.."