1. :A pimple is always infected whereas a sebaceous cyst need not be. 2. After finishing the race, Merckx had a sebaceous cyst removed on 22 June. 3. It is characterized by clusters of abscesses, epidermoid cysts, sebaceous cysts , pilonidal cysts. 4. Several related medical conditions involve sebum including acne, sebaceous cysts , hyperplasia, and sebaceous adenoma. 5. Other conditions that can cause similar symptoms include : cellulitis, a sebaceous cyst and necrotising fasciitis. 6. "' Cock's peculiar tumour "'is a sebaceous cyst linked growth that can resemble a squamous cell carcinoma. 7. Dear Dr . Smith : For many years I have had multiple sebaceous cysts on my vulva and anus. 8. Cysts ( such as sebaceous cysts ) are also referred to as tumors, even though they have no neoplastic cells. 9. It has been suggested by medical professionals that the term " sebaceous cyst " be avoided since it can be misleading. 10. A sebaceous cyst is a non-cancerous, closed sac or cyst below the skin that is caused by plugged ducts at the site of a hair follicle.