Kidney or renal biopsy is the excision of a tissue sample from the kidney for microscopic analysis to determine cell morphology and the presence of tissue abnormalities. This test assists in confirming a diagnosis of cancer found on x-ray or ultrasound or to diagnose certain inflammatory or immunological conditions.
The Three Sisters are a subgroup of the Cascade volcanoes west of Bend in central Oregon, consisting officially of North, Middle, and South Sisters (all approximately 10,000 ft high), though Mt. Bachelor (aka Bachelor Butte) & Broken Top are also in the immediate vicinity.
Eventually, these parts break off, and fall due to the effects of gravity. This is how the Three Sisters was formed. The three sisters is famous because it is a tourist destination and is a must see attraction of the Blue Mountains National Park. Tourists enjoy having a bush walk which starts at the Three Sisters.