Luteinised Unruptured Follicle Syndrome

The dominant follicle undergoes luteinisation but does not rupture to release the egg despite normal LH surge and progesterone rise.

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The dominant follicle undergoes luteinisation but does not rupture to release the egg despite normal LH surge and progesterone rise.

Regular cycles with normal progesterone yet no conception

No egg released on follicle tracking scans

Unexplained infertility

Peritoneal endometriosis

NSAIDs use around ovulation

Elevated LH at mid-cycle

Pelvic adhesions

Serial follicle tracking ultrasound

Progesterone on Day 21

Diagnostic laparoscopy if recurrent

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