Endocrinology Question 23 Instructor

List 4 genetic syndromes which are associated with pheochromocytoma. What are the other manifestations of these syndromes?

Syndrome Other manifestations
MEN 2A and 2B 2A:

  • hyper PTH
  • medullary thyroid cancer (MTC)
  • pheo


  • MTC
  • pheo
  • mucosal neuromas
Von Hippel Lindau Renal cell carcinoma,
hemangioblastoma (retina, cerebellar),
endolymphatic middle ear tumours,
pancreatic tumours
Neurofibromatosis-1 Café au lait spots, neurofibromas
SDHA, SDHB, SDHC, SDHD Paragangliomas (extra-adrenal pheos), SDHB: renal cell ca

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