Normal variations of pubertal development and precocious puberty: Analysis of two clinical cases

Lucía Rivero, Carlos Zunino, María Noel Cuadro, Gustavo Giachetto

Abstract


Introduction: Precocious puberty is defined as the appearance of secondary sexual characteristics before the age of 8 in girls and 9 in boys. Objective: Emphasize the Pediatrician´s role in the diagnosis, treatment and follow-up of patients with precocious puberty. Description: Case 1: Girl, 4 years and 11 months old. Thin and scarce pubic hair since 6 months of age. No hypertrophy of the clitoris or breast. Overweight. Normal growth rate and neurodevelopment. Examination: scarce curly pubic hair, non-estrogenic mucosa. Increase in breast size. Breast ultrasound shows lipomatosis. Bone age: 5 years. Case 2: Girl, 6 years and 11 months old. Painful bilateral and symmetric breast growth, no galactorrhea.  Oppressive, moderate and non-progressive headache. No intracranial hypertension. Pubarche, no menarche. Adequate neurodevelopment. Obese. Growth rate above the 90 percentile. Tanner III. Non-estrogenic genital mucosa. Bone age: 13 years. Gynecological ultrasound shows prepubertal uterus. Normal FSH, LH, estradiol, prolactin, TSH, T4 and cranial MRI. Treatment is initiated with leuprolide acetate. Discussion The appearance of thelarche, pubarche or menarche in patients with normal bone age, as in Case 1, constitutes an ordinary variation of puberty. However, as shown in Case 2, the presence of multiple sexual characteristics and advanced bone age must be considered as precocious puberty indicators. Pediatricians have an important role in the diagnosis and treatment of precocious puberty, as well as in the patient´s follow-up. Both anamnesis and physical examination are key to guide the diagnosis.


Keywords


Sexual development; diagnosis; clinical evolution



DOI: http://dx.doi.org/10.20320/rfcsudes.v3i1.110

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