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J Hum Reprod Sci. 2017 Jul-Sep;10(3):154-161. doi: 10.4103/jhrs.JHRS_77_17.

Debates Regarding Lean Patients with Polycystic Ovary Syndrome: A Narrative Review.

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Department of Obstetrics and Gynecology, AIIMS, New Delhi, India.
Department of Obstetrics and Gynecology, Tanta University, Tanta, Egypt.


Polycystic ovary syndrome (PCOS) is a complex syndrome showing the clinical features of an endocrine/metabolic disorder, including hyperinsulinemia and hyperandrogenism. Two phenotypes are present, either lean or obese, with different biochemical, hormonal, and metabolic profiles. Evidence suggests many treatment modalities that can be applied. However, many of these modalities were found to be not suitable for the lean phenotype of PCOS. Much contradictory research was found regarding lean patients with PCOS. The aim of this narrative review is to shed light on the debate prevailing regarding characteristics, as well as metabolic, hematological, and potential management modalities. Literature review was performed from January 1, 2000 to March 31, 2017 with specific word search such as lean PCOS, hormonal abnormalities in lean PCOS, and the management of lean PCOS. All retrieved articles were carefully assessed, and data were obtained. We could conclude that the debate is still prevailing regarding this specific lean population with PCOS, especially with regard to their characteristics and management modalities. Further studies are still required to resolve this debate on the presence of PCOS in lean women.


Debate; lean; ovary; polycystic; syndrome

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