What type of cyst is characterized by being filled with sebum?

A steatoma, commonly referred to as an epidermoid cyst or sebaceous cyst, is characterized by being filled with sebum, which is the oily substance produced by sebaceous glands in the skin. These cysts typically form when the sebaceous gland becomes obstructed, leading to a buildup of sebum. Their contents can include dead skin cells and other debris, creating a characteristic soft, movable lump under the skin.

This understanding of steatomas is crucial for skincare specialists as they are relatively common and can be mistaken for other types of lumps without proper assessment. Knowledge of the nature of the cyst and its relationship to skin oil production helps in determining the appropriate treatment options, such as aspiration or surgical removal if necessary.

In contrast, dermoid cysts typically contain skin elements like hair and may be more complex in composition, while pilar cysts are specifically associated with hair follicles and are commonly filled with keratin rather than sebum. Ganglion cysts, often found on joints and tendons, are filled with synovial fluid rather than sebum, showcasing the variety in cyst types and their contents. Understanding these differences is essential for accurate diagnosis and treatment in a skincare setting.