Related Experiment Video
Updated: Jul 24, 2026

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
[A case of huge renal hamartoma]
H Yanaihara1, K Hayakawa, M Ohashi
1Department of Urology, Tokyo Dental College, Ichikawa General Hospital.
Abstract:
We experienced a case of renal hamartoma of mesothelial origin. A 21-year-old was referred to our hospital with a complaint of growing abdominal mass. The diagnosis of right renal tumor was confirmed based on the radiographic examinations. The renal tumor was removed by partial nephrectomy. Histological examination revealed the tumor composed of fibroblasts, smooth muscle and a few tubule-like epithelial tissue. Thus, this case was classified as renal hamartoma of mesothelial origin.
Related Concept Videos
Kidney Structure
External Anatomy of the Kidney
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
Internal Anatomy of the Kidney
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
Renal Cortex
The outermost region of the kidney is the...
Renal Corpuscle
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...

