Bermudo, E. et al. 2026. Recurrent Sporadic Parathyroid Carcinoma in a 29-Year-Old Filipino Female Presenting with Primary Hyperparathyroidism: A Case Report and Literature Review. The Philippine Journal of Pathology. 11, 1 (Jun. 2026). DOI:https://doi.org/10.21141/PJP.2026.583.