title: Primary umbilical endometriosis - Diagnosis by fine needle aspiration.
abstract: Primary (spontaneous) umbilical endometriosis is very rare with an estimated incidence of 0.5-1% of all patients with endometrial ectopia. Endometriosis is a common gynecological condition, the pelvis being the most common site of the disease. Extrapelvic site is less common and even more difficult to diagnose due to the extreme variability in presentation. A 38-year-old woman presented with a blackish nodule over the umbilicus of 3 years duration. Fine needle aspiration cytology of the lesion showed cells in clusters and sheets with background of scant stromal fragment, hemosiderin laden macrophages and RBCs, leading to a suggestion of umbilical endometriosis. Histopathological examination of the excised lesion confirmed the same.
authors.affiliation: Department of Pathology, Fr Muller Medical College, Mangalore, India.
authors.forename: Hilda
authors.initials: H
authors.lastname: Fernandes
authors.forename: Nisha J
authors.initials: NJ
authors.lastname: Marla
authors.forename: Kirana
authors.initials: K
authors.lastname: Pailoor
authors.forename: Reshma
authors.initials: R
authors.lastname: Kini
references.citation: J Cytol. 2010 Apr;27(2):77-8
references.pmid: 21157558
references.citation: Singapore Med J. 2008 Sep;49(9):704-9
references.pmid: 18830545
references.citation: Pathologica. 2008 Dec;100(6):473-5
references.pmid: 19475890
references.citation: J Minim Invasive Gynecol. 2007 Jan-Feb;14(1):23-32
references.pmid: 17218225
references.citation: J Cytol. 2010 Jul;27(3):106-8
references.pmid: 21187878
references.citation: Fertil Steril. 2006 Dec;86(6):1764.e1-2
references.pmid: 17074348
references.citation: Acta Cytol. 2007 May-Jun;51(3):380-4
references.pmid: 17536539
references.citation: Diagn Cytopathol. 2011 Jan;39(1):18-21
references.pmid: 20058306