Radiographic Signs of Jaw Lesions — NEET MDS | CrackMDS

Osteosarcoma. Sunray spiculation is classic for osteosarcoma.

Fibrous dysplasia. Fibrous dysplasia shows a ground-glass pattern.

Paget's disease. Cotton-wool opacities are typical of Paget's disease.

⭐ High-Yield Facts for Exam

Soap bubble / honeycomb — Ameloblastoma (also odontogenic myxoma, CGCG).
Sunray / sunburst — Osteosarcoma.
Onion-skin (laminated periosteum) — Ewing's sarcoma (also Garré's osteomyelitis).
Ground glass — Fibrous dysplasia.
Cotton wool — Paget's disease of bone.
Driven snow — Calcifying epithelial odontogenic tumour (Pindborg) / AOT calcifications.

Describe locularity, borders, effect on teeth/bone, and internal structure to build a differential.

Soap bubble = ameloblastoma; sunray = osteosarcoma; onion skin = Ewing's; ground glass = fibrous dysplasia; cotton wool = Paget's.

Q1. A 'sunray/sunburst' appearance suggests:

A. Ameloblastoma

B. Osteosarcoma

C. Fibrous dysplasia

D. Paget's disease

Show Answer

✅ Answer: B

Sunray spiculation is classic for osteosarcoma.

Q2. 'Ground glass' radiographic appearance is seen in:

A. Ewing's sarcoma

B. Fibrous dysplasia

C. Ameloblastoma

D. OKC

Show Answer

✅ Answer: B

Fibrous dysplasia shows a ground-glass pattern.

Q3. 'Cotton wool' appearance is characteristic of:

A. Paget's disease

B. Osteosarcoma

C. Dentigerous cyst

D. Myxoma

Show Answer

✅ Answer: A

Cotton-wool opacities are typical of Paget's disease.

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