This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
Sudden headache with LOC in patient with renal cysts, intracranial bleed SAH (berry aneurysm). Diagnosis is 
Select and explain. 
A. ADPKD, B. Haemangioma of liver, C. Meningioma, D. Head injury
A: ADPKD
Answer: A: ADPKD 
Explanation: (A) ADPKD# POLYCYSTIC KIDNEY DISEASE (PKD OR PCKD, also known as polycystic kidney syndrome) is a cystic genetic disorcer of the kidneys. There are two types of PKD: autosomal dominant polycystic kidney disease (ADPKD) and the less-common autosomal recessive polycystic kidney disease (ARPKD).> Major extrarenal complications of ADPKD are: Cerebral aneurysms; Hepatic and pancreatic cysts; Cardiac valve disease; Colonic diverticula; Abdominal wall and inguinal hernia. Malformations of selected vasculature, including intracranial aneurysms and aortic root dilatation (normal diamete' <35 mm), may be due to altered expression and/or function of the PKD gene in arterial smooth muscle cells. Cervicocephalic artery dissections, dolichoectasias, and central retinal vascular occlusions have also been associated with ADPKD.> CEREBRAL ANEURYSM: A ruptured cerebral aneurysm, resulting in a subarachnoid or intracerebral hemorrhage, is the most serious complication of polycystic kidney disease. The prevalence of aneurysms in ADPKD is approximately 5 percent in young adults and increases with age to as high as 20 percent in patients 60 years and older.