Condition	Characteristics
Dermoid cyst	Firm, slow-growing benign tumor containing mature skin cells; often possesses multiple epidermal appendages, such as hair follicles or sebaceous glands
Lipoma	Benign fatty tumor composed of mature fat cells, usually with a soft, rubbery consistency; slow-growing; yellow surface discoloration
Ranula	Localized collection of mucus underneath the tongue, usually arising from trauma to the sublingual salivary gland
Soft tissue space abscess	Localized collection of pus usually surrounded by inflamed tissue resulting from an infection; typically painful and may be associated with fever