This guide is for educational purposes only. It is not a substitute for consultation with your treating physician. Every pathology report reflects a unique clinical situation — understanding the terminology is the first step, but your physician is the right person to discuss what your specific findings mean for your care.
Receiving a pathology report can feel overwhelming. The language is technical, the formatting is unfamiliar, and the stakes feel high. Most patients receive their report through a patient portal with no explanation attached — and their physician may have only a few minutes to discuss it at the next appointment.
Understanding the structure of your report will not change what it says. But it can change how you engage with it — and how prepared you are for the conversation with your physician.
The Basic Structure of a Pathology Report
Most surgical pathology reports follow a consistent structure. Once you recognize the sections, the report becomes considerably less intimidating.
Patient and Specimen Identification
At the top of every report you will find identifying information: your name, date of birth, medical record number, the date the specimen was collected, and the laboratory accession number. The accession number is the laboratory's unique identifier for your specimen — it is used to track the tissue from receipt through processing and final diagnosis. If you have questions about a specific report, this number is what the laboratory will use to locate your case.
Clinical History
This section contains the information provided to the pathologist by your physician — typically a brief description of your symptoms, the reason for the procedure, and any relevant medical history. The pathologist uses this context when interpreting your findings. If the clinical history section in your report is incomplete or inaccurate, it is worth noting — the pathologist's interpretation is always made in the context of the information they were given.
Specimen Description
This describes what was submitted to the laboratory. You will typically see the specimen labeled by site — for example, "right breast core biopsy" or "sigmoid colon, resection." If multiple specimens were submitted at the same time — from different sites, or from different procedures — each will be listed separately, usually labeled A, B, C, and so on. Each labeled specimen has its own diagnosis.
Gross Description
The gross description is the Pathologists' Assistant's or pathologist's written record of what the specimen looked like with the naked eye — before any microscopic examination. It documents the size, color, texture, and any visible lesions, along with how the specimen was processed (how it was cut, how many sections were taken, how it was submitted to the laboratory processor).
Most patients skip the gross description, but it contains important information: the size of any lesion, the condition of the surgical margins, and exactly what was sampled for microscopic evaluation. If you see a phrase like "representative sections submitted" — that simply means the pathologist examined representative samples of the tissue, which is standard practice for most specimens.
Microscopic Description
This section describes what the pathologist observed when examining the tissue under a microscope. It is often the most technically dense section of the report, filled with terms that describe cell appearance, tissue architecture, and specific histologic features. Not all reports include a separate microscopic description — some pathologists go directly from the gross description to the diagnosis.
Diagnosis
This is the most important section of the report. The diagnosis line states the pathologist's final conclusion about your tissue. For each labeled specimen, there is a diagnosis. The diagnosis may be:
- Benign — the tissue is not cancerous
- Malignant — cancer is present
- Pre-malignant or atypical — the tissue shows abnormal features that may require further evaluation
- Inflammatory or reactive — the tissue shows a response to injury or infection
- Normal — no significant abnormality identified
The diagnosis in your pathology report is the pathologist's interpretation of your tissue under the microscope. It is the most authoritative description of what was found in that specimen. What it means for your treatment, prognosis, and follow-up care is a clinical question — one for your physician, not your pathology report.
Terms You Will Commonly See
Addenda and Amended Reports
Sometimes a pathology report is followed by an addendum — an additional report that supplements or amends the original. Addenda are issued when additional testing results become available (such as IHC or molecular testing ordered after the initial diagnosis), when a second opinion is obtained, or when a transcription or administrative error requires correction. If you see an addendum on your report, read both the original and the addendum — the addendum may contain findings that affect the diagnosis.
What to Do With Your Report
Understanding the structure of your report is a starting point, not an endpoint. The terminology guide above can help you decode specific words, but interpreting what your findings mean in your specific clinical context — what they mean for your treatment, prognosis, and next steps — requires a conversation with your treating physician.
When you meet with your physician, consider bringing a written list of the terms you did not understand and the specific questions you want answered. Your physician has the full clinical picture — your imaging, your symptoms, your medical history — and can place your pathology findings in the context that matters most.
If you would like a structured, plain-language expert translation of your specific pathology report — built around the questions you actually have — the Sentinel Clarity Report (SCR) is designed for exactly that. Every SCR is written by a credentialed Pathologists' Assistant with 28 years of surgical pathology experience, delivered securely, and built around your questions.