A 4-year-old girl presented at the emergency room because of very painful lesions affecting her gums, lips, and fingers.

A 66-year-old man presented to the oral surgeon, referred by his dentist, because of a lesion that was noted on his anterior mandible in a panoramic radiograph.

A 9-year-old girl presented to the oral surgeon, referred by her family dentist, because of a lesion in the right posterior maxilla.

A 12-year-old boy presented to the oral surgeon because of an anterior mandibular lesion noted on a panoramic radiograph.

A 2-year-old girl visited the pediatric dentist with a small mass on her posterior right mandibular alveolar ridge.

During a recall exam, a pediatric dentist noted a bluish-colored lesion on the gumline, lingual to tooth #3.

A 69-year-old man was referred to the oral surgeon by his dentist because of an unusual “small, soft, painless mass” behind the maxillary central incisors.

A 3-year-old-girl visited the family dentist for a recall exam. The dentist noted an area of erythema in the middle of the tongue.

A 15-year-old girl was referred to the oral surgeon by her family dentist because of an unusual lesion in her posterior right maxilla.

A 3-year-old boy, accompanied by his parents, presented to the dentist complaining of excruciating pain in the back of the mouth for the past 48 hours.

A 14-year-old boy was referred to the oral surgeon because of a radiolucent mandibular lesion noted on a panoramic film.

An 8-year-old girl presented to the pediatric dentist for her recall exam. The intraoral exam showed a painless “bump” over the anterior right dorsum of the tongue.

A 15-year-old girl presented to the oral surgeon, referred by her family dentist, because of painless “growths” on her anterior mandible.

A 10-year-old boy presented for his recall exam. The clinician noted a brown-bluish lesion on the gumline, lingual to tooth #3.

A 6-year-old boy presented at the family dentist for a recall exam. The dentist noted a “white membrane” on both sides of the buccal mucosa.

A 3-year-old girl presented to the pediatric dentist, referred by her dentist, because of “black small lesions” lingual to tooth #K.

A 9-year-old girl presented to the local hospital emergency room with her parents because of very painful, bleeding lesions affecting the gums for the past three days.

A 35-year-old woman presented to the dentist for a regular recall examination. In an x-ray, the clinician noted an unusual lesion in her right mandible.

An asymptomatic 16-year-old boy undergoing a routine dental exam.

A 17-year-old girl with generalized mobility of the teeth.