A new diagnostic exercise published in Veterinary Clinical Pathology (Wiley Online Library) presents a bronchoalveolar lavage sample from a cat and challenges clinicians to work through the cytology themselves. The case, authored by Bilhalva, appears in the journal's long-running "What Is Your Diagnosis?" series, which withholds the answer so readers can test their own interpretive skills against the published diagnosis.

What is actually in the exercise?

The format is deliberately spare. Readers receive the clinical material — a BAL specimen from a feline patient — together with the imaging and laboratory findings the journal chooses to publish, and no conclusion up front. The answer, along with the cytological description and final diagnosis, follows in the article's discussion section.

That structure is the point. These exercises function as self-assessment tools for practitioners and residents in clinical pathology and internal medicine, particularly those handling respiratory caseloads in cats.

Why BAL cytology matters at the exam table

Bronchoalveolar lavage remains a cornerstone diagnostic for feline lower airway disease, from asthma and chronic bronchitis to less common infectious, inflammatory and neoplastic processes. Cytology from a well-collected lavage can redirect therapy quickly — distinguishing eosinophilic inflammation from bacterial infection or lymphocytic airway disease changes the drug, the dose and the prognosis.

For a general practitioner, the practical value of a case like this one is rehearsal. Interpreting BAL cytology under time pressure is a perishable skill, and journals' unknown-case series are one of the few ways to keep it sharp without a patient on the table.

What the piece does not do

It is worth stating plainly what this publication is and is not. It is a single-case educational exercise, not a study, a trial or a guideline revision. There is no sample size, no statistical analysis and no regulatory dimension. The journal has not, based on the published material, framed the case as changing any standard of care.

Practitioners looking for practice-level takeaways should read it as continuing education: a structured prompt to review how they would approach feline BAL interpretation, and a check against the reasoning the authors lay out in their answer.

The case is available now through Wiley Online Library for subscribers and accessing institutions.