ESPE Abstracts

Introduction: Neonatal severe hyperparathyroidism (NSHPT) is a life-threatening disease characterized by hypercalcemia and bone demineralization due to homozygous or compound heterozygous loss-of-function mutations in the calcium-sensing receptor (CaSR) gene. Most cases require emergency parathyroidectomy to be life-saving. Alternative treatments, such as pamidronate and cinacalcet, may be used until surgery is feasible. We present a case of severe hypercalcem...

Introduction: Phosphatase and tensin homolog (PTEN) is a tumor suppressor gene involved in the PI3K/AKT/mTOR pathway. Mutations in the PTEN gene are known to cause PTEN Hamartoma Tumor Syndrome (PHTS), an autosomal dominant disorder. This syndrome is characterized by proliferative lesions in various tissues, including the thyroid gland, breast, gastrointestinal system, kidneys, and endometrium. We present a patient who initially presented with a breast mass an...

Introduction: Peutz-Jeghers syndrome (PJS) is a disorder characterized by autosomal dominant inheritance, hamartomatous polyps in the gastrointestinal system, mucocutaneous pigmentation, and a predisposition to malignancies, caused by mutations in the STK11 gene. In male patients, large cell calcifying Sertoli cell tumors associated with prepubertal gynecomastia can be observed. We present a case of prepubertal gynecomastia that led to a diagnosis of PJS durin...