What are osseous structures and why would they be "remarkable for patient age" on a ct scan? is that bad or good?

Probably a typo: No one would (or should) ever simply state "remarkable" without going into detail about why they are remarkable. Most radiologists nowadays are compelled into using computer based voice recognition systems and transcription errors have skyrocketed as a result. Confusion between words such as "remarkable" and the much more likely "unremarkable" are common. Even the best proofreaders miss stuff.

Bones: Osseous structures is a fancy term for bones. One of those things that makes doctors sound smart. I would imagine that the report should say they are unremarkable which means... I looked at the bones and they are normal for a person of this age. Hope that helps.

Bones: Osseous structures refer to bony structures such as the skull, spine and bones of the limbs. I suspect what you are seeing is a typo. It is common for radiology reports to read "osseous structures are unremarkable". Please confirm with the Radiologist that interpreted the exam.

Osseous structures: They are bones. Typically a radiologist says "unremarkable for age", double check.