Microsatellite instability driven metastatic parathyroid carcinoma managed with the anti-PD1 immunotherapy, pembrolizumab
Daniel Park, Rany Airi, Michael Y. Sherman
Abstract
The present case report describes a 65-year-old man with Lynch syndrome and hypercalcaemia associated with hyperparathyroidism. Parathyroid surgery confirmed the diagnosis of parathyroid carcinoma. Serum calcium and parathyroid hormone (PTH) concentrations serially increased after initial surgery. Imaging study and subsequent biopsy confirmed lung metastases with mismatch repair deficiency. Pembrolizumab was initiated achieving 60% reduction in tumour burden.
Topics & Concepts
PembrolizumabParathyroid carcinomaMedicineHypercalcaemiaPrimary hyperparathyroidismMicrosatellite instabilityParathyroid hormoneImmunotherapyBiopsyCarcinomaInternal medicineOncologyCancerGastroenterologyCalciumMicrosatelliteAlleleChemistryBiochemistryGeneGenetic factors in colorectal cancerCancer Diagnosis and TreatmentSoft tissue tumor case studies