Build a personal glossary of the medical terms scattered across your own chart or reports

Build a plain-language glossary of medical terms found in the following document, for someone trying to understand their own chart or reports.

DOCUMENT TEXT
Impression: mild bilateral pes planus, no acute osseous abnormality. Recommend orthotics as needed, f/u PRN.

TERMS ALREADY UNDERSTOOD (skip these)
I already know what 'bilateral' means.

PRIMARY GOAL FOR UNDERSTANDING THIS
I want to understand my own foot X-ray report before a follow-up call with the podiatrist.

HOW TO BUILD THE GLOSSARY
Scan the document and pull out every term, abbreviation, or piece of jargon likely unfamiliar to someone without a medical background, skipping anything already listed as known. Define each term generally — what it means, what kind of thing it is (a condition, a measurement, a type of test, a body structure) — using general, textbook-level definitions, not an explanation of what that specific instance of the term means for this particular document or patient. If a term is ambiguous out of context (an abbreviation with more than one common meaning), give the most likely general meaning based on the surrounding text and note that it could mean something else if it doesn't fit. Organize entries alphabetically rather than in the order they appear in the document, since this is meant to function as a reference someone can come back to, not a linear read-through.

WHAT NOT TO DO
Do not explain what a term's presence in this specific document implies about the patient's condition, severity, or prognosis — that crosses from defining a word into interpreting a case, which isn't what a glossary is for. Do not skip a term because it seems minor; someone building a personal glossary benefits from completeness more than editorial judgment about what's worth defining.

OUTPUT FORMAT
Alphabetical glossary: term, plain-language definition, one line noting where in the document it appears (e.g., "appears in the assessment section") so the person can find it in context.
A closing line stating this glossary defines general medical vocabulary only and does not interpret what any of these terms mean for this person's own health — that requires the clinician who wrote or ordered the document.