Arias-Stella phenomenon

A·ri·as-·Ste·lla phe·nom·e·non

(ahr'yahs stel'ă),
focal, unusual, decidual changes in endometrial epithelium, consisting of intraluminal budding, and nuclear enlargement and hyperchromatism with cytoplasmic swelling and vacuolation; may be associated with ectopic or uterine pregnancy.
Farlex Partner Medical Dictionary © Farlex 2012

Arias-Stella reaction

A dysmorphic change in the endometrial glands that closely simulates an adenocarcinoma. The ASR is hormonally induced and regarded as a typical endometrial reaction in ectopic pregnancy, which may be seen in trophoblastic disease; it is rare in normal intrauterine pregnancies.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Javier, Peruvian pathologist, 1924–.
Arias-Stella effect - focal, unusual, decidual changes in endometrial epithelium that may be associated with ectopic or uterine pregnancy. Synonym(s): Arias-Stella phenomenon; Arias-Stella reaction
Arias-Stella phenomenon - Synonym(s): Arias-Stella effect
Arias-Stella reaction - Synonym(s): Arias-Stella effect
Medical Eponyms © Farlex 2012
References in periodicals archive ?
Entities to Be Considered in the Diagnosis of Tubal Intraepithelial Carcinoma Reactive hyperplasia and atypia of the tubal epithelium Surgical (thermal) and histologic artifacts Arias-Stella phenomenon of tubal epithelium Radiation effects on tubal epithelium Tubal metaplasias--papillary metaplastic tumor and transitional metaplasia Atypical hyperplasia/tubal atypia Secretory hyperplasia of tubal epithelium Papillary syncytial metaplasia of tubal mucosal endometrium