Medical Oddities: When puberty arrives at 4 months old

A genetic mystery, hearts in space, midnight munchies, and tea with muscle power are in the lineup this week.

1

A girl with estrogen-related changes beginning at 4 months had recurrent vaginal bleeding, advanced bone age, severe anemia, and endometrial abnormalities by age 6 years and 7 months.
2

Whole-exome sequencing identified a likely pathogenic ESR1 p.Tyr537Ser variant, while suppressed luteinizing hormone argued against central precocious puberty; causation remains unconfirmed.
3

Tamoxifen temporarily reduced the cervicovaginal mass and improved symptoms, but recurrence was documented by February 2025, prompting combined letrozole–tamoxifen therapy.
4

The case report authors noted that the long-term malignancy risk is unknown, and the unusually early puberty’s relationship to excessive estrogen receptor activity remains uncertain.
5

The report described atypical endometrial hyperplasia/endometrioid intraepithelial neoplasia in a child, an extraordinarily unusual finding in childhood.

1