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Pheochromocytomas and paragangliomas (PPGL) are catecholamine-producing neuroendocrine tumors that arise from the adrenal medulla or ganglia and display the highest heritability rate among all human tumours. Genomic analyses allowed identification of molecular subgroups of PPGL which are organized into 2 main clusters. Cluster 1 contains SDHx- and VHL-mutated tumors which do not produce epinephrine while cluster 2 includes the epinephrine-secreting PPGL related to RET, NF1, TMEM127 and MAX mutations. PPGL must be early diagnosed and treated to prevent adrenergic crises which can be life-threatening. Detection of PPGL is particularly important during pregnancy since PPGL are associated with a high risk of either maternal or fetal complications in this context. Reciprocally, pregnancy can favor adrenergic crises in patients with previously undiagnosed or …