## **Core Concept**
Basal cell carcinoma (BCC) is the most common type of skin cancer and frequently occurs on the face, particularly on the eyelids. It is a slow-growing, locally invasive tumor that rarely metastasizes. The eyelid is a common site for BCC, and its presentation can vary.

## **Why the Correct Answer is Right**
The most common presentation of basal cell carcinoma of the lid is a **non-ulcerative or nodular** type, which typically appears as a painless, shiny, or pearly nodule. This type accounts for approximately 80% of BCC cases. The nodular type is often found on the lower eyelid and can cause local destruction if left untreated.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Ulcerative type is a presentation of BCC but not the most common one. It appears as a crater-like ulcer with rolled edges.
- **Option C:** Morpheaform or sclerodermiform type is a less common, aggressive form of BCC that appears as a flat, indurated plaque, often with ill-defined borders.
- **Option D:** Pigmented type can occur but is less common and might be confused with melanoma; it presents as a pigmented lesion.

## **Clinical Pearl / High-Yield Fact**
A key clinical feature of basal cell carcinoma is its tendency to cause local destruction but rarely metastasizes. A helpful mnemonic for the characteristics of BCC is the "5 S's": **Smooth**, **Shiny**, **Solitary**, **Slow-growing**, and **Seldom metastasizes**.

## **Correct Answer:** B. Non-ulcerative or nodular type.