The short answer
Radiologists use words like "suspicious" and "indeterminate" to describe how a finding looks and how confident they are. "Suspicious" means features raise concern and further checking is warranted; "indeterminate" means it can't be classified as clearly benign or concerning yet. Neither is a diagnosis. Both usually lead to a next step — often more imaging or a biopsy — to get a clearer answer.
These words describe a radiologist's level of concern, not a confirmed diagnosis.
"Suspicious" means features warrant a closer look; "indeterminate" means it's unclear so far.
The usual next step is more imaging or a biopsy to clarify.
A biopsy is what actually confirms or rules out cancer.
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The full explanation.
Where you'll see these phrases
In imaging reports: "suspicious for malignancy," "indeterminate lesion," "cannot exclude," or "recommend further evaluation." Some reports use standardized categories (for example, BI-RADS for breast imaging) that carry similar meaning.
What they mean in plain language
Radiologists rarely say "this is cancer" or "this is definitely fine" from an image alone. Instead they describe their level of concern:
- Suspicious — the finding has features that raise concern, so it should be checked further.
- Indeterminate — it can't be sorted into clearly harmless or clearly concerning based on this test.
Both are honest ways of saying "we need more information."
Why it may matter
These words usually trigger a next step designed to get certainty — additional imaging, a specialized scan, or a biopsy. Getting that answer is the point; the label itself is a waypoint, not a destination.
What they do not mean
- "Suspicious" does not mean confirmed cancer. Many suspicious findings are benign after biopsy.
- "Indeterminate" does not mean something is being hidden — it means the test genuinely can't say yet.
What context is still needed
Ask your doctor to explain, in plain terms, how concerned they are and what the plan is. The waiting between a "suspicious" result and an answer is hard; knowing the timeline can help.
Words to know
Tap any term to see what it means.
Common questions
▸Does 'suspicious' mean I have cancer?
No. It means the finding has features that warrant checking further. Many suspicious findings turn out to be benign after a biopsy. It's a reason to investigate, not a diagnosis.
▸Why can't the scan just tell for sure?
Imaging shows shape, size, and behavior, but often can't distinguish benign from cancerous with certainty. A biopsy — sampling the tissue — is usually what gives a definite answer.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
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Your next step
Plain-language definitions for the words on your report.
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