Primary Umbilical Endometriosis (Villar’s Nodule): A Rare Symptomatic Umbilical Pathology in An Adult Woman. KYAMC Journal, [S. l.], v. 13, n. 1, p. 56–60, 2022. DOI: 10.3329/kyamcj.v13i1.59883. Disponível em: https://www.banglajol.info/index.php/KYAMCJ/article/view/59883. Acesso em: 1 jul. 2026.