Potassium metal was first isolated in 1807 in England by Sir Humphry Davy, who derived it from caustic potash (KOH, potassium hydroxide) by the use of electrolysis of the molten KOH with the newly discovered voltaic pile.
Angiomyolipomas are the most common benign tumour of the kidney. Although regarded as benign, angiomyolipomas may grow such that kidney function is impaired or the blood vessels may dilate and burst leading to bleeding.
Diagnosis of Renal Angiomyolipoma. Sonography of the Kidney: Sonography of the kidneys shows an echogenic mass in the kidney, caused by the high fat content. CT-Abdomen: The fat content typically causes a hypodense mass in the kidney with -20 to -80 HU, this enables the differentiation to renal cell carcinoma [fig. CT of angiomyolipoma].