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. 2021 Dec 6;18:30. doi: 10.25259/CMAS_02_01_2021

Figure 18:

Figure 18:

Because of superficial morphological resemblance, lubricant-debris (arrows) in effusion specimen could be confused with mucin (a&b: Pap stained direct smear; c&d: Diff-Quick stained direct smear). This pit-fall may deepen further with histochemical testing with positivity for Mucicarmin stain (c&d in Figure 20).