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Understanding your medical notes

Plain-English guides to your medical documents

Medical letters and results are written for clinicians, not patients. These free guides explain how each type of document works, decode the abbreviations, and help you know what to ask your doctor. Or skip the reading and paste your own note into Patiently AI for an instant explanation.

Written by Nick Lamb, PhD, medical writer MHRA-registered Class I medical device Methods validated in a peer-reviewed study

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Letters & documents

Discharge summary explained

What each section of a hospital discharge letter means, with abbreviations like TTO, Dx, OD and 6/52 decoded.

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Referral letter explained

How a GP referral works, what routine, urgent and 2-week-wait mean, and the shorthand decoded.

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Prescription abbreviations explained

What OD, BD, PRN, PO and the rest of a medication label mean, and what to check before you take a medicine.

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Test & scan results

Blood test results explained

What reference ranges and high/low flags mean, and common tests like FBC, eGFR, LFTs and HbA1c decoded.

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MRI report explained

How a radiology report is structured, why the Impression matters most, and terms like lesion and hyperintense.

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Ultrasound report explained

What echogenic, hypoechoic, simple cyst and Doppler mean, across abdominal, pelvic and pregnancy scans.

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ECG results explained

What sinus rhythm, AF, ectopics and ST changes mean — and why "borderline" is often nothing to worry about.

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Biopsy & pathology results explained

Where the conclusion is, and what benign, malignant, in situ, grade and margins mean — explained calmly.

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CT scan report explained

How a CT report is structured, why the Impression matters, and terms like contrast, nodule and incidental finding.

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Endoscopy & colonoscopy report explained

What polyp, biopsy taken, inflammation and diverticulosis mean — and why many findings are common and benign.

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Cervical screening (smear) results explained

What HPV positive, abnormal cells and a colposcopy referral mean — and why abnormal does not mean cancer.

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Mammogram results explained

What BI-RADS 0–6, calcifications and a recall mean — and why being called back rarely means cancer.

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Using Patiently AI

Help & FAQs

How the tool works, supported file types, privacy and on-device redaction, reading levels, and the 17 output languages.

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