Head and neck

Question 1

Lesions involving the globe

Answer 1

retinoblastoma, melanoma, retinal detachment with choroidal effusion

Question 2

Intraconal lesion

Answer 2

Optic nerve glioma, meningioma, pseudotumor, mets, lymphoma, hematoma, neurofibroma

Question 3

Conal lesions

Answer 3

Orbital pseudotumor, thyroid eye disease, rhabdomyosarcoma

Question 4

Extraconal lesion

Answer 4

Orbital cellulitis, lymphoma, mets, dermoid, lymphangioma, lacrimal gland tumor, LCH, paranasal sinus tumor

Question 5

Enlarged orbit

Answer 5

Neurofibromatosis, congenital glaucoma, longstanding SOL

Question 6

Enlarged optic foramen

Answer 6

Concentric enlargement (optic nerve glioma, neurofibroma, orbital tumoral extension, vascular granuloma), focal (adjacent tumor, mucocele, raised intracranial pressure)

Question 7

Enlarged superior orbital fissure

Answer 7

Neurofibromatosis, extension of intracranial lesion (meningioma, infraclinoid aneurysm, parasellar chordoma), sphenoid wing lytic mets, orbital lesion extension (AVM, hemangioma, orbital meningioma, lymphoma)

Question 8

Intraorbital calcification within the globe

Answer 8

Cataract, retinoblastoma, previous trauma, infection

Question 9

Intraorbital calcification outside the globe

Answer 9

Phlebolith, orbital meningioma, neurofibroma, intraorbital dermoid, lacrimal gland carcinoma

Question 10

Orbital hyperostosis

Answer 10

Meningioma, sclerotic mets, FD, Paget, osteopetrosis, chronic OM, LCH, post radiation

Question 11

Small/absent sinus

Answer 11

Congenial (hypothyroidism, Down, Kartagener), Acquired (Paget, FD, Hemolytic anemia, postoperative)

Question 12

Opaque maxillary antrum

Answer 12

Trauma (fracture, overlying tissue, epistaxis), inflammatory (sinusitis, allergy, mucocele), neoplastic (carcinoma, lymphoma), other (FD, Cyst, Wegener)

Question 13

Mass in maxillary antrum

Answer 13

Cyst (mucus retention, dentigerous), trauma, neoplasm (polyp, carcinoma), wegener granulomatosis

Question 14

Cyst in mandible/maxilla

Answer 14

Periodontal cyst, dentigerous cyst, hyperparathyroidism, ameloblastoma, LCH, ABC, GCT, hemangioma, FD, mets, bone cyst

Question 15

Floating teeth

Answer 15

LCH, hyperparathyroidism, mets, myeloma

Question 16

Nasopharyngeal mass

Answer 16

Adenoidal hypertrophy, trauma/hematoma, infection, benign neo (angiofibroma), malignant neo (lymphoma, rhabdomyosarcoma, plasmacytoma), encephalocele

Question 17

Prevertebral ST mass in adult

Answer 17

Trauma, abscess, postcricoid carcinoma, lymphoma, chordoma, pharyngeal pouch, retropharyngeal goiter