Arizona Esthetics State Board Practice Exam

Which of the following is a harmless sebaceous cyst?

1. Pilonidal cyst

2. Steatoma

3. Dermoid cyst

4. Cystic acne

The correct answer is: Steatoma

A steatoma, also known as a sebaceous cyst, is a benign (non-cancerous) growth that arises from the sebaceous glands in the skin. These cysts are usually filled with a creamy substance called sebum, which is produced by the glands to lubricate the skin and hair. Steatomas can appear anywhere on the skin but are most commonly found on the scalp, neck, and behind the ears. They are generally harmless and do not pose a health risk unless they become infected or inflamed. Understanding the context of sebaceous cysts is crucial. While pilonidal cysts are related to hair follicles and are often located near the tailbone, they can sometimes become infected or painful. Dermoid cysts, which can include various tissues such as hair, skin, and teeth, are also not considered harmless in all cases, as they can grow and cause complications. Cystic acne, although related to sebaceous glands, is an inflammatory condition that can lead to scarring. In summary, the identification of steatoma as a harmless sebaceous cyst is based on its benign nature and lack of associated health risks, distinguishing it from other types of cysts or conditions that may present complications or require medical attention