Kidney cells are cells that cover the wall of the kidney tubules. A small number are found in normal urine. Any damage to the kidney tubules that causes separation (desquamation) of the cells on the tubule surface will manifest in a high number of kidney cells in the urine specimen (acute tubular necrosis, interstitial nephritis, proliferative glomerulonephritis).
Breast cancer: This is a malignant tumour made up of many cancerous cells. It should be noted that breast cancer is not the most common cause of breast pain, as patients of this disease are often asymptomatic.