Kidneys are two small organs in human body that are placed close to vertebral column. The right kidney is placed a bit lower than the left kidney. Both the kidneys are bean shaped and are about 4 inch or 10 cm in length and 21/2 inches or 6.4 cm in breadth. The kidneys perform various functions in our body but the major function of kidney is to separate mineral salts, toxins, urea and waste material from blood. Kidney also performs the vital function of conserving water, electrolytes and water. For the sustenance of life, it is necessary that at least one of the kidneys should function normally.
When an abnormal tissue is found associated with any organism or inside any organism, then it is called lesion. More often occurrence of lesion is because of some trauma or disease to body tissue. The world lesion is derived from the Latin term ‘laesio’ which means injury. Lesion encompasses a broad meaning and hence any damage to the tissue is termed as lesion. A kidney lesion is an abnormal tissue which is damaged by some malignant growth on kidney or near it. Many times metabolic processes like trauma, ulcer caused due to electrocution, skin diseases like chicken pox or chemical burns can cause lesions to kidney.
Usually kidney lesions do not cause any symptoms unless they are cancerous and hence are discovered when a routine CT scan is carried out, most probably for some other organ problem. More often when a patient suffers pain from kidney stones or gallstones he has to undergo lot of scans and tests. Although during the scanning, the lesion or damaged tissue may not be clearly visible, the doctors will advise further tests so as to confirm the suspicion. Or the doctor may ask the patient to come back after couple of months when the tissue damage or kidney lesion is more visible for confirming the doubt.
Kidney lesions are differentiated by medical professionals based on their various features as there are wide varieties of lesions. The bull’s eye or target lesion is named so on the basis of its shape. When the lesion is malignant it is termed as cancer induced lesion and if it is benign, the kidney lesion is called as non cancerous lesion. A lesion is termed as gross based on its size as it can be seen by human eye. A kidney lesion which can only be visible under microscope is termed as histological. The lesion is also differentiated on the basis of space occupied by them. A lesion that comes under the category of space occupying lesion intrudes the space of organ placed nearby whereas a lesion which does not occupy any space is enclosed inside the tissue more often as a hole.
As long as the kidney lesions are benign there are no complications as such and the lesion can be removed by small surgery or even by medication it can be eliminated without undergoing any invasive treatment. But the condition becomes complicated when the lesions are diagnosed as malignant. Such kidney lesions are characterized by thick and irregular calcifications and peripheries with irregular and inconsistent density. Sometimes even uniformly dense lesions too can be malignant but the chances are very rare. The cancerous kidney lesions have shaggy look with increasing nodules. Once malignancy kidney lesions are discovered the complications aggravate further and the doctors advise different tests to investigate further the spread of lesion. Mostly tests like MRIs, Ultrasound and CT scans are advised so as to get a good idea of lesion present in the kidney. If this cancerous lesion is not attended and treated properly, it can damage and stall the function of kidney and can also spread to other organs which can prove fatal.