Chest X-ray results: lung findings and heart shadows

My chest X-ray results came back, and while they said my lungs and frontal sinuses look fine, there’s this note about an "enlarged left ventricle silhouette"
Does anyone have a theory on what that actually implies before I head into the doctor's office? ¤

Are there any other symptoms besides those test results? For instance, have you noticed any high blood pressure?
How old are you?

I don't really have any specific symptoms...
Honestly, I’m just trying to figure out what this actually means. My cousin—she’s an internist who glanced at the results for maybe five minutes before she even saw me—told me not to sweat it and that it isn't anything dangerous. Yeah, right. That’s incredibly comforting, isn't it?
The problem is, I can't exactly get a detailed breakdown right now since she flew off to the USA for a week. ¤