pathtalk.org is a weblog about pathology and laboratory medicine.

Case of the Week 42

Here is a special case in honor of Valentine’s day. The following section of lung was removed due to the presence of a nodule that mimicked a lung carcinoma. However, on sectioning and H&E staining, the following was seen. Identification?

Bonus question – what does this case have to do with Valentine’s day???

Is this Dirofilariasis? I think this has a Valentine’s day angle since the larvae travel to the heart, die, and get washed into the lungs. How romantic. . . .

Heartworm?