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Normal cells / non-neoplastic findings
Reviewer: Xinmin Zhang, M.D., Temple University (see Reviewers page)
Revised: 28 April 2014, last major update August 2010
Copyright: (c) 2006-2010, PathologyOutlines.com, Inc.
Definition / General
● Spontaneously exfoliated endometrial cells are often seen during the first 12 days of the menstrual cycle
● May also be due to hormone replacement therapy (Obstet Gynecol 2002;100:445) or tamoxifen
● Endocervical sampling devices may inadvertently sample the lower uterine segment or endometrium
● Variable association of benign endometrial cells at pap smear with endometrial pathology in postmenopausal women (yes: Am J Clin Path 2005;123:571, Diagn Cytopathol 2001;45:153), (no association: Cancer 2005;105:207, Diagn Cytopathol 2001;25:235)
● Most associated carcinomas are in women age 45+ years (Am J Clin Pathol 2005;124:834)
● Exfoliated endometrial cells often present as small cells arranged in balls with scant cytoplasm, dark nuclei and nuclear molding and fragmentation
● Abraded endometrial cells may present as large and small tissue fragments with glands and stromal cells
● Resemble histiocytes
● Easier to identify if in clusters
IUD related changes
Contributed by Dr. Marilin Rosa, University of Florida (USA)
Thin Prep of normal endometrial group-postmenstrual cycle, contributed by Dr. Carmen Luz, Spain:
● Adenocarcinoma in situ
● Small cell carcinoma
● Small cell squamous cell carcinoma
Cervix-cytology > Normal cells / non-neoplastic findings > Endometrial cells
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