**Core Concept**
Basal cell carcinoma (BCC) is a type of skin cancer that originates from the basal cell layer of the epidermis. It is the most common form of skin cancer, typically resulting from prolonged exposure to ultraviolet (UV) radiation from the sun or tanning beds.
**Why the Correct Answer is Right**
The characteristic feature of basal cell carcinoma is its local invasiveness, but the hallmark feature is its ability to form **palisading** around the tumor. This feature is due to the tumor cells' tendency to form a peripheral row of cells, which is a result of the tumor's slow growth and local invasion. The palisading pattern is a result of the peripheral cells being pushed outward by the growing tumor, creating a distinctive histological appearance.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as BCC is not typically characterized by its rapid growth rate or aggressive behavior.
* **Option B:** While BCC can cause local destruction, it is not typically associated with lymph node metastasis.
* **Option C:** This option is incorrect as BCC is not typically associated with a high degree of cellular atypia or pleomorphism.
**Clinical Pearl / High-Yield Fact**
The palisading pattern of BCC is a classic histological feature that can be remembered using the mnemonic "P.A.L.S." - Peripheral, Atypical, Low-grade, and Slow-growing.
**Correct Answer:** C.
Free Medical MCQs Β· NEET PG Β· USMLE Β· AIIMS
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