## **Core Concept**
The question pertains to the association of multiple epidermoid cysts with specific clinical conditions. Epidermoid cysts, also known as sebaceous cysts, are benign skin lesions that arise from the pilosebaceous unit. They are lined by stratified squamous epithelium and contain keratin.

## **Why the Correct Answer is Right**
The correct answer, **C. Gardner's syndrome**, is a variant of Familial Adenomatous Polyposis (FAP), characterized by the presence of multiple colonic polyps, osteomas, and various soft tissue tumors, including epidermoid cysts. Gardner's syndrome is an autosomal dominant condition caused by mutations in the APC gene. The presence of multiple epidermoid cysts in a patient can be a clue to the diagnosis of Gardner's syndrome.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Muir-Torre syndrome is a rare genetic disorder characterized by the occurrence of sebaceous neoplasms (like sebaceous adenomas, sebaceous epitheliomas, sebaceous carcinomas) and an increased risk of certain types of cancer, particularly colorectal cancer. While it involves sebaceous lesions, it is not primarily associated with multiple epidermoid cysts.
- **Option B:** Turcot syndrome is another genetic disorder that involves an increased risk of colorectal cancer and brain tumors, particularly medulloblastoma. It does not have a specific association with epidermoid cysts.
- **Option D:** Peutz-Jeghers syndrome is characterized by the development of benign hamartomatous polyps in the gastrointestinal tract and an increased risk of certain cancers. It is associated with mucocutaneous melanin deposits, not epidermoid cysts.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the presence of multiple epidermoid cysts, especially in a young patient, should prompt consideration of Gardner's syndrome, particularly if there are other suggestive features like osteomas or a family history of colorectal polyps or cancer.

## **Correct Answer: C. Gardner's syndrome**