Human subcutaneous and ocular dirofilariasis. Human subcutaneous and ocular dirofilariasis. (A) External appearance of a subcutaneous nodule in the ocular region. (B) Histological section of a nodule showing sections of adult D. repens worms. (C) Intravitreal location of an adult D. repens worm in a human patient. (Panels A and B courtesy of Vladimir Kartashev, University of Rostov Na Donu, Rostov, Russia; panel C reprinted from reference 208 with permission.) Fernando Simón et al. Clin. Microbiol. Rev. 2012; doi:10.1128/CMR.00012-12