Civatte bodies are found in –
**Core Concept**
Civatte bodies, also known as colloid bodies or hyaline bodies, are a type of apoptotic cell fragment that can be found in various tissues, particularly in the skin and oral mucosa. They are a hallmark of keratinocyte apoptosis and are often seen in conditions characterized by epithelial hyperplasia or damage.
**Why the Correct Answer is Right**
Civatte bodies are formed as a result of apoptosis in the basal layer of the epidermis or oral mucosa, leading to the fragmentation of keratinocytes. They are typically seen in conditions such as lichen planus, psoriasis, and oral lichen planus, where there is an increased rate of keratinocyte turnover. The presence of Civatte bodies is a diagnostic clue to these conditions, particularly when seen in conjunction with other histopathological features.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because Civatte bodies are not typically found in the dermis, where collagen and elastic fibers are more abundant.
**Option B:** Incorrect because while Civatte bodies can be seen in conditions with inflammation, they are not a hallmark of inflammatory conditions in general.
**Option C:** Incorrect because while Civatte bodies can be seen in conditions with hyperplasia, they are not a specific marker for hyperplastic disorders.
**Clinical Pearl / High-Yield Fact**
Civatte bodies are often seen in conditions where there is a disruption of the normal epithelial turnover process, leading to an increase in apoptosis and keratinocyte fragmentation. This can be a useful diagnostic clue in conditions such as lichen planus and psoriasis.
**Correct Answer: D. Oral mucosa, skin**