large, hard, fixed, and extremely tender lymph nodes in the groin above and below the inguinal ligament, with a groove along the ligament; characteristic of lymphogranuloma venereum.
Farlex Partner Medical Dictionary © Farlex 2012
groove signSTD A finding characterized as linear fibrotic depressions parallel to the inguinal ligament, bordered above and below by enlarged and matted lymph nodes and covered by adherent, erythematous skin, seen in 10-20% of lymphogranuloma venereum–Chlamydia trachomatis.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.