جرح على العجز قاعه كله مغطى بقشرة سوداء وأنسجة صفراء ميتة. ما التصنيف؟

A sacral wound’s base is completely covered by black eschar and yellow slough. What is the classification?

1. Stage 3
2. Unstageable
3. Stage 4
4. Deep tissue injury

Answer: B) Unstageable. When the base is fully covered by necrotic tissue the depth cannot be seen, so it is unstageable until debrided.