Does A Stable Thick-walled Liver Cyst With Normal LFTs, Except GGT, Over Many Years Suggest A Serious Or Malignant Condition?

Hi Doctor, I am actually a healthy 51 years old male individual. In 2006, while doing a routine company medical test, there was an Ultra Sound done where there was a simple cyst in my liver was discovered. We got very worried and consulted several doctors as well as Liver Specialists. My LFT test were all normal. Only GGT was very high - 300. All the liver specialists after doing examining me informed that the simple cyst is nothing to worry about - especially since I have no symptoms and also since my LFT tests are all normal ( barring GGT) Still as a matter of caution, I kept doing my Ultra sound almost every 6 months just to check if the size of the cyst which was smaller than 5 cms. There was no change. Also my LFT tests were all normal. Recently in 2019, my wife reminded me to check the ultrasound since after 2010 onwards, we had not done the same. When we did the ultrasound in 2019, it showed the cyst was same : the report said : THERE IS EVIDENCE OF ROUNDED THICK WALLED CYSTIC LESION IN THE LEFT ROBE OF THE LIVER, MEASURING 3.6x3.0x0.25 CM ( VOLUME 15CC). THE CYST SHOWS ALTERATION IN THE MOPHOLOGY WITH REDUCTION IN THE DIMESNIONS AS COMPARED TO PREVIOUS US STUDY OF 2006( DONE ELSEWHERE). THE LIVER ALSO SHOWS MILD DIFFUSE FATTY CHANGES. SMALL ECHOGENIC FOCUS IN THE PERI-CHOLECYSTIC REGION MEASURING 1.4 CM IS EITHER LOCAL FAT OR HEMANGIOMA. THE INTRA HEPATIC VASCULAR BILIARY CHANNELS ARE NORMAL. THE PORTAL VEIN IS NORMAL IN COURSE AND CALIBRE. THE HEPATIC VEINS AND IVC ARE WITHIN NORMAL LIMITS. THE GALL BLADDER IS WELL DISTENDED WITHOUT ANY DEFINITE CALCULUS OR MASS LESION THE COMMON BILE DUCT AND PANCREAS DOES NOT REVEAL ANY DEFINITE ABNORMALITY. SPLEEN IS NORMAL IN SIZE AND ECHOTEXTURE. NO FOCAL LESION IS SEEN. The Doctor who was doing the USG informed me that there is no change and that actually the cyst size has come down because in between the cyst might have ruptured as per the Ultra sound Findings. He said nothing to worry about and I can ignore. in 2021 August 2021, I again made another USG ( after 2 years) from the same Sonography center. Doctor again mention that there was no change from last report. The August 2021 report said the below : THERE IS EVIDENCE OF ROUNDED THICK WALLED CYSTIC LESION IN THE LEFT ROBE OF THE LIVER, MEASURING 3.6x3.0x0.25 CM ( VOLUME 15CC). NO SIGNIFICANT INTERVAL CHANGE IN THE SIZE AND MORPHOLOGY FROM LAST REPORT IN MARCH 2019 THE LIVER ALSO SHOWS MILD DIFFUSE FATTY CHANGES. SMALL ECHOGENIC FOCUS IN THE PERI-CHOLECYSTIC REGION MEASURING 1.4 CM IS EITHER LOCAL FAT OR HEMANGIOMA. THE INTRA HEPATIC VASCULAR BILIARY CHANNELS ARE NORMAL. THE PORTAL VEIN IS NORMAL IN COURSE AND CALIBRE. THE HEPATIC VEINS AND IVC ARE WITHIN NORMAL LIMITS. THE GALL BLADDER IS WELL DISTENDED WITHOUT ANY DEFINITE CALCULUS OR MASS LESION THE COMMON BILE DUCT AND PANCREAS DOES NOT REVEAL ANY DEFINITE ABNORMALITY. SPLEEN IS NORMAL IN SIZE AND ECHOTEXTURE. NO FOCAL LESION IS SEEN. Again the Doctor s advice was that I can ignore. I also did my LFT test and my LFT Tests were all normal ( barring GGT which was 153. all other LFT readings were all completely normal. Now suddenly, I was seeing the internet and found somewhere that cysts can become malignant later on. So I just wanted to check and get opinion from all is where from my reports and above history, does anything look worrisome or not. I am actually an OCD patient and always have lot of anxiety related worries on health so after seeing one article in the internet, I got a bit worried and wanted to check again. Please do let me know. My only concern was that earlier in the reports in 2006/2007 and 2008 when I was doing the Ultra sound, it was sayin Simple Hepatic Cysts. But now, it says THERE IS EVIDENCE OF ROUNDED THICK WALLED CYSTIC LESION IN THE LEFT ROBE OF THE LIVER, MEASURING 3.6x3.0x0.25 CM ( VOLUME 15CC) The wording Thick Walled Cystic Lesion has made me worried that this a complex cyst and not a simple cyst and something dangerous. SO I just want to cross check and get the opinion. Otherwise I have no health issues. I just have an Anxiety and OPD Disorder for which I am taking medicines for