#Hematoidin crystals are diamond shaped yellow crystals that are often present within macrophages. The presence of hematoidin indicates evidence of previous hemorrhage🩸 because they are formed during anaerobic breakdown of hemoglobin, particularly within tissue or body cavities.
【ALL THE CRYSTALS YOU NEED TO KNOW】Can you recognize No. 1️⃣, 2️⃣, and 3️⃣? What do thay mean wheh you see them in cytology? 🧐 Comment below to share your thoughts.👇The answers will be posted in the next few days. Stay tuned. 😉
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A Boxer dog with multiple nodules (limbs & ear pinna). The macrophages have non-staining bacterial rods, consistent with #Mycobacterium. The breed, lesion locations, and cytologic findings are consistent with leproid granuloma. #cytopath#vetpathology#vetcytology#vetclinpath