The phrase "a narrow case" is correct and usable in written English.
It can be used to describe a specific situation or instance that is limited in scope or applicability.
Example: "In this narrow case, we must consider the unique circumstances that led to the decision."
Alternatives: "a limited case" or "a specific case".
Even during her appearance with Maddow, Warren made only a narrow case on Clinton's behalf.
It's not a political document in the sense of making a narrow party case or a narrow case for a particular position.
Rather than deciding a narrow case, the court explicitly asked for arguments on a broad constitutional question at best tangentially related to the case before it.
He said that he did not receive any money from drug companies and that his data was only "a narrow case study of one drug category in Africa in 2001".
After Monday's ruling, the S.E.C. is left to pursue a narrow case, while Bank of America executives are trying to resolve various inquiries without dropping their position that its executives did nothing wrong, legal experts said.
What began as a narrow case on a specific leak, many fear, has morphed into a broader threat to the way business is done here, a system that often benefits both sides.
But Verrilli stood his ground, saying he was making a narrower case restricted to health insurance.
Instead, it filed a narrower case that accuses Ms. O'Brien of violating a rule regarding the segregation of customer money, which will not require proving any fraudulent intent.
The Olmsted County study used a narrower case definition of new, isolated, acute injuries based on final diagnosis [ 11].
"I can make a very narrow case for the real scientific benefits of a manned space programme over using robots or whatever but that ignores the hugely inspirational aspects of having an actual person in space which are enormous.
Detecting well-known monuments in perfect conditions from the right distance is a fairly narrow case use.
