Mammogram results: 10mm lobulated nodule in left breast. explain.

Follow-up: A "lobulated nodule" is a descriptive term that a radiologist uses to explain a finding on a study, like a mammogram. It is important to follow up with your primary physician and ask them whether the description matches a finding that is either worrisome or expected. The radiologist will also have indicated the Bi-Rads category which helps to understand whether findings are worrisome or not.

That description: is not specific enough to venture a guess as to the level of suspicion. Other mammographic/sonographic features will determine how suspicious it is, and whether biopsy is indicated. Was this a screening mammo? Likely you will need additional mammo views and an ulltrasound for further evaluation.