| | 
|
|---|
| Case of the Month | by Dr K C Choy AM (Mal), MBBS, M.Med, FRCR Answer to Case Of the Month Discussion The CT scan shows a well defined mass in the left suprarenal region. The mass is retroperitoneal in location as evidenced by the anterior displacement of the pancreatic body and tail as well as part of the stomach. The celiac axis is also stretched and displaced slightly to the right. The mass is of mixed density with soft tissue and fat component (negative H.U.). There is no calcification or cystic component. The features indicate a retroperitoneal tumour most likely arising from the left adrenal gland. Fatty tissue within a mass may be seen in a variety of tumours such as teratomas, lipoma/liposarcoma, angiomyolipomas, and myelolipoma. At surgery, a well encapsulated suprarenal tumour was removed. Histopathological examination showed areas of fatty and haemopoietic tissue and a diagnosis of Adrenal myelolipoma was made. | | Adrenal myelolipoma | | Adrenal myelolipoma is a benign tumour of the adrenal cortex and are composed of mature adipose cells and haemopoietic tissue. They represent metaplastic overgrowth from stem cells which myelolipomatous and adrenocortical cells share as a common origin. The gross appearance resembles fatty tissue and contains patchy red brown areas of haemopoietic cells. The tumours are not normally not active hormonally and usually detected incidentally. They are usually seen in the 4th to 6th decades of life and have no sex predilection. Although retroperitoneal haemorrhage has been reported, patients are generally asymptomatic. A small percentage are bilateral and calcifications are occasionally seen. 
| | About the Author | | Dr K C Choy is currently attached to the Mahkota Medical Centre, Melaka as Radiologist. | Please click here for more cases! |
Copyright © 2001-2011 College of Radiology, Academy of Medicine of Malaysia All Rights Reserved Terms of Use Last Updated: Thursday, 21 August, 2003 | |