Objectives: The aim is to compare the hormonal status and anti-müllerian hormone (AMH) levels of patients who have different polycystic ovary syndrome (PCOS) phenotypes, polycystic ovarian morphology (PCOM) and healthy women. Material and methods: A total of 350 PCOS women, 71 women with PCOM and 79 healthy women with normal ovarian morphology (NOM) were observed. PCOS patients were divided into groups according to the phenotypes. Phenotype A- characterized by anovulation, hyperandrogenism and PCOM; phenotype B- defined as anovulation, hyperandrogenism; Phenotype C- identified as hyperandrogenism and PCOM; Phenotype D- outlined as anovulation and PCOM. AMH levels were compared for each group. Results: Among 350 PCOS patients the highest number belonged to phenotype A (n = 117, 33.4%). The rest were distrubuted as follows: phenotype B (n = 89, 25.4%), phenotype C (n = 72, 20.6%), phenotype D (n = 72, 20.6%). Phenotype A (9.17 ± 4.56) had the highest mean AMH levels in our study. Comparison of AMH levels showed a statistically significant difference between phenotypes A and D. There was a statistically significant difference on comparison of AMH between NOM, PCOM and all PCOS phenotypes. Conclusions: Phenotype A is the most serious form of PCOS and these patients has all three features which are hyperandrogenism, anovulation and ultrasound findings of polycystic ovary (PCO). AMH reflects the severity of PCOS and patients with Phenotype A have higher AMH levels
