In polycystic kidney disease, cysts can form in which organs besides the kidneys?

In polycystic kidney disease, cysts can form in which organs besides the kidneys?

• A. Liver, spleen, and pancreas
• B. Heart and bones
• C. Lungs and skin
• D. Adrenal glands

Answer: (A)

In polycystic kidney disease, cysts form outside the kidneys because the disease affects polycystin proteins that regulate epithelial cell growth and fluid secretion in ducts and tubules throughout many organs. The liver is the most common extrarenal site, with cysts arising from biliary epithelium. Pancreatic cysts can also occur, and splenic cysts, though less common, may be seen as well. So, the combination of liver, spleen, and pancreas fits the typical pattern of extrarenal cyst formation in this condition. The other organs listed—heart and bones, or lungs and skin—are not typical sites for cyst formation in polycystic kidney disease, and adrenal glands are rarely involved.

In polycystic kidney disease, cysts form outside the kidneys because the disease affects polycystin proteins that regulate epithelial cell growth and fluid secretion in ducts and tubules throughout many organs. The liver is the most common extrarenal site, with cysts arising from biliary epithelium. Pancreatic cysts can also occur, and splenic cysts, though less common, may be seen as well. So, the combination of liver, spleen, and pancreas fits the typical pattern of extrarenal cyst formation in this condition. The other organs listed—heart and bones, or lungs and skin—are not typical sites for cyst formation in polycystic kidney disease, and adrenal glands are rarely involved.