Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for March 20th, 2010

Thyroid Uptake Imaging

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  • I-123 = 200-600 uCi; 99mTc-pertechnetate = 5-10 mCi
  • normal
    • homogenous
    • approx. 2 x 5 cm
  • ectopic thyroid: neck, base of tongue, ovary (struma ovarii), mediastinum; L>R
  • congenital organification defect = no activity
  • cold nodules
    • colloid cyst (MC)
    • adenoma
    • carcinoma (MC papillary)
  • hot nodules
    • hyperfunctioning adenoma (MC)
    • carcinoma
  • multinodular goiter
  • diffuse increased uptake
    • Graves disease = diffuse toxic goiter
    • Thyroiditis (Hashimoto’s)

Written by lmwong

March 20, 2010 at 6:46 pm

Pediatric Renal Tumors

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  • Wilm’s tumor
  • nephroblastomatosis
  • Clear cell sarcoma
  • Rhabdoid tumor
  • Hamartoma
  • Angiomyolipoma
  • Ossifying Renal Tumor of Infancy
  • Metanrphric Adenoma
  • Adjacent Neuroblastoma from adrenal gland

Written by lmwong

March 20, 2010 at 10:57 am