9.5 Pathology and Report Terminology
Key Takeaways
- Pathology language describes specimens, cells, tissue, disease patterns, and report conclusions.
- Biopsy, cytology, histology, gross description, microscopic description, diagnosis, margin, grade, and stage are not interchangeable terms.
- Benign, malignant, dysplasia, neoplasm, metastasis, acute, chronic, and inflammation are high-yield report words.
- A terminology learner should translate report language accurately without adding a diagnosis that the report does not state.
Pathology and Report Terminology
Pathology is the study of disease, and pathology reports use a compact language for specimens, cells, tissues, and diagnostic impressions. In medical terminology, the first task is to identify whether the word describes the sample, the method of examination, the type of abnormality, or the conclusion. A biopsy is tissue removed for examination. Cytology is the study of cells. Histology is the study of tissues. A pathology report may include a gross description, microscopic description, final diagnosis, margins, grade, stage, and comments.
Those labels are not decorative; they tell you where the information comes from and how much certainty the report is expressing.
Pathology Vocabulary Map
| Term | Meaning | Exam-prep distinction |
|---|---|---|
| pathology | study of disease | Field or diagnostic service |
| biopsy | removal of tissue for examination | Sample collection, not the microscope study itself |
| cytology | study of cells | Cell-level examination |
| histology | study of tissues | Tissue-level examination |
| specimen | material submitted for examination | Could be tissue, fluid, cells, or other sample |
| gross description | what is visible without a microscope | Size, color, shape, number of pieces |
| microscopic description | what is seen under a microscope | Cell and tissue details |
| final diagnosis | pathologist's diagnostic conclusion | Conclusion section, not just raw observation |
| margin | edge of removed tissue | Important in excision reports |
| comment | additional explanation or correlation | May qualify the diagnosis |
Disease description words must also be kept separate. Benign means not malignant in the usual pathology sense, but benign does not always mean clinically unimportant. Malignant means cancerous or capable of invasive and destructive behavior. A neoplasm is a new growth and can be benign or malignant. Dysplasia means abnormal development or abnormal cell changes. Metastasis means spread of malignant disease from a primary site to another site. Inflammation is a tissue response to injury, infection, irritation, or immune activity.
Acute generally means sudden or short course, while chronic means long-standing or persistent.
Report Meaning Terms
| Word | Plain meaning | Common mistake |
|---|---|---|
| positive | detected or present in the context of that test | Do not assume good news |
| negative | not detected or absent in that context | Do not assume no disease in every possible sense |
| suspicious | concerning but not always definitive | Do not treat as final diagnosis unless stated |
| consistent with | supports a diagnosis or interpretation | Often requires context |
| rule out | evaluate whether a condition is present | Does not mean the condition has been excluded yet |
| differential diagnosis | list of possible diagnoses | Not a final answer by itself |
| correlation recommended | compare with clinical, imaging, or lab findings | Not a standalone diagnosis |
Grade, Stage, and Margin
Grade and stage are often confused. Grade usually describes how abnormal tumor cells look or how aggressively they may behave under the microscope. Stage usually describes extent of disease, such as size, spread to lymph nodes, or distant metastasis depending on the cancer system. Margin refers to the edge of removed tissue. A negative margin generally means the target abnormality is not seen at the cut edge in that report context. A positive margin generally means the abnormality reaches the edge. Medical terminology learners should translate the term, not decide treatment.
Safety Distinctions
Biopsy and autopsy are not the same. A biopsy examines tissue from a living patient or a procedure sample; an autopsy is examination after death. Cytology and cystology are not the same; cyt/o means cell, while cyst/o means bladder or sac. Benign and malignant are not opposites of painful and painless. Positive and negative depend on the specific test. An inflammatory result is not automatically an infection. A mass is not automatically malignant. These distinctions prevent over-reading documentation.
Reading a Report Section
When a question gives a report excerpt, identify the section title first. Indication tells why the specimen or study was obtained. Gross description tells what the specimen looked like to the naked eye. Microscopic description tells what was seen under magnification. Diagnosis gives the formal interpretation. Comment or addendum may clarify, correct, or add information. If the question asks for the meaning of histology, do not answer with gross appearance. If it asks for the meaning of margin, do not answer with tumor grade. Report literacy is mostly category control.
Which term means the study of cells?
In pathology report language, what does a gross description usually describe?
Which statement about report language is safest?