Have Bilateral Swelling Of The Feet. Abdominal Ultrasonography And Blood Work Done. Urinary Bladder Normal. Any Suggestion?

Dr. I have bilateral swelling of the feet. Abdominal ultrasonography result say Liver normal in size and shows bright homogenous echotexture. No evidence of solid or cystic masses Intraheptic biliary radicles appears normal Gall bladder is normal.No evidence of gall stones. Pancreas is normal in size and echotexture Spleen is normal in size and echotexture Both kidneys are normal in size and echotexture with normal parenchymal thickness and normal collecting system. No evidence of renal calculus or hydronephrosis or focal lesion. Urinary bladder is normal. No evidence of calculus. Prostrate is normal in size and echotexture. No free fluid in thev pelvis. Blood test: Cholestrol 191 mg/dl Triglycerides 180 mg/dl HDL cholestrol 42 mg/dl, LDL cholestrol 113 mg/dl VLDL cholestrol 36 mg/dl, T-CHOL./HDL-CHOL 4.5 mg/dl LDL-chol / HDL chol 2.6 mg/dl, Urea 26 mg/dl, Creatinine 1.1 mg/dl Billirubin total 1.1 mg/dl, Billirubin direct 0.4 mg/dl, Billirubin indirect 0.7 mg/dl, SGPT 180 IU/L & urine analysis is also normal. Kindly advise what could be the reason for the same.