Sandbox:DDx HEENT
- Asymptomatic hypercalcemia
- May have abdominal pain, constipation, renal colic, depression, and bone fractures
- Mass is not palpable in most cases
- Elevated PTH
- Hypercalcemia
- Hypophosphatemia
- >1cm in size
- homogeneously hypoechoic mass with an echogenic thyroid capsule on U/S
- increased uptake on sestamibi scan
- Cellular, homogenous lesions
- Chief cells with a delicate capillary network
- Minimal mitotic activity
- Microfollicles
- No capsular invasion