“With only routine H&E stains it can be difficult to make an accurate diagnosis of a histiocytic disease. Diseases that have been confused with the histiocytic disorders based on morphologic appearance include lymphomatoid pulmonary granulomatosis, large cell anaplastic carcinoma of the lung and granulomatous inflammatory conditions.”

—Kim L. Cronin, DVM, DACVIM

From Deciphering the histiocytic code