138 | The International Academy of Cytology

Case 31

Author: Dr. Manon Auger, Dept of Pathology, McGill University, Montreal, Canada

Reviewer: Ritu Nayar, MD., Northwestern University,Feinberg School of Medicine, Chicago, IL, USA

Case history: A 47 year old man presented with an interstitial lung infiltrate; no other past significant history. A virtual slide and 7 static images (Papanicolaou-stained slides) of the bronchial washing are provided.

Fig.2. Papanicolaou stain, 400X case_31_image_3

Fig.3. Papanicolaou stain, 600X case_31_image_4

Fig.4. Papanicolaou stain, 400X case_31_image_5

Fig.5. Papanicolaou stain, 600X case_31_image_6

Fig.6. Papanicolaou stain, 600X case_31_image_7

Fig.7. Papanicolaou stain, 400X

What is the most likely diagnosis of this case?