12 results
Menstrual Cycle Physiology: Ovarian Cycle – Brief Overview
LH and FSH are required for follicular development and
Overview LH and FSH ... follicle - FSH ... produced -> Inhibit FSH ... not implant #MenstrualCycle ... #menstruation #endocrinology
Primary Amenorrhea Differential Diagnosis Framework

Workup:
 • β-HCG, TSH and PRL
 • Breast Tanner Staging
 • FSH,
Tanner Staging • FSH ... pediatrics #obgyn #gynecology ... #algorithm
Causes of Primary and Secondary Amenorrhea - Differential Diagnosis Algorithm
Primary Amenorrhea - No onset of menarche
Differential Diagnosis Algorithm ... Etiology - High FSH ... Ovarian - High FSH ... Differential #Diagnosis #Algorithm ... Causes #OBGyn #Gynecology
Menstrual Cycle Physiology: The Hypothalamic-Pituitary-Ovarian Axis
Estrogen, when released:
 • Negatively feeds back on the hypothalamus and
pituitary to Decreased FSH ... #MenstrualCycle ... HypothalamicPituitary #endocrinology
Menstrual Cycle Physiology: Ovarian Cycle – Follicular Phase Explained
Early Follicular Phase (Days 0-5)
 • Granulosa cells
pituitary, 2) Incr FSH ... Resulting high FSH ... responsive to FSH ... #MenstrualCycle ... FollicularPhase #endocrinology
Menstrual Cycle Physiology: Ovarian Cycle – Luteal Phase Explained
 • The LH surge can be thought
Production of GnRH, FSH ... • Decreased FSH ... allowing GnRH/FSH ... Ovarian Cycle #MenstrualCycle ... #LutealPhase #endocrinology
Hypogonadism Differential Diagnosis Algorithm
 • Low testosterone, Normal or low LH, Normal or low FSH -
Differential Diagnosis Algorithm ... Normal or low FSH ... Normal LH, Normal FSH ... Differential #Diagnosis #Algorithm ... #Testosterone #endocrinology
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
Differential Diagnosis Algorithm ... Ovarian - Normal FSH ... Ovarian - High FSH ... Differential #Diagnosis #Algorithm ... Causes #OBGyn #Gynecology
Amenorrhea - Differential Diagnosis Algorithm
Elevated FSH
 • Premature Ovarian Failure
 • Menopa use
 • Spontaneous
Bleed With
Differential Diagnosis Algorithm ... Elevated FSH ... Differential #Diagnosis #Algorithm ... #endocrinology
Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
 - Secreting
Differential Diagnosis Algorithm ... TSH • LH/FSH ... Differential #Diagnosis #Algorithm ... #endocrinology