Histochemical demonstration of glycogen in the cells can help in the diagnosis of_________________?
Correct answer: D. Ewing's sarcoma
- A. Malignant melanoma
- B. Squamous cell carcinoma
- C. Kaposi's sarcoma
- D. Ewing's sarcoma
Explanation
Ewing sarcoma cells commonly contain abundant glycogen, which can be demonstrated histochemically with PAS staining and helps distinguish it from other small round-cell malignancies. The other listed tumours are not classically identified by this glycogen pattern.
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