Modarressi et al. [52] have described a similar occurrence of ‘gestational gigantomastia’ and hypercalcemia (14 mg/dL), whereby the authors demonstrate suppressed PTH and elevated PTHrP; rather than breast reduction, the patient requested termination of pregnancy, which subsequently normalized calcium, PTH, and PTHrP. The gene discussed is PTHLH; the disease is Breast hypertrophy.