Classic questions Fundamentals

Question 1

Classes of interlobular septal thickening (3)

Answer 1

• Smooth.
• Nodular.
• Irregular.

Question 2

Differential diagnosis of smooth interlobular septal thickening (7)

Answer 2

• Pulmonary edema.
• Lymphoproliferative disease.
• Amyloidosis (Rare).
• Lymphangitic carcinomatosis (Rare).
• Erdheim-Chester disease (Rare).
• Pulmonary veno-oclussive disease (Rare).

Question 3

Differential diagnosis of nodular interlobular septal thickening (4)

Answer 3

• Sarcoidosis.
• Lymphagitic carcinomatosis.
• Lymphoproliferative disease.
• Amyloidosis (Rare)

Question 4

Differential diagnosis of honeycombing (8)

Answer 4

• IPF.
• CT-ILD.
• Fibrotic HP.
• Sarcoidosis.
• Drug- related ILD.
• Asbestosis
• NSIP.
• Post-ARDS syndrome.

Question 5

Drugs that produce pulmonary fibrosis

Answer 5

• Nitrofurantoine.
• Cyclophosamide.
• Chrolambucil.
• Pindolol.

Question 6

Differential diagnosis of UIP (7)

Answer 6

• IPF.
• Fibrotic HP.
• CT-ILD.
• Sarcoidosis.
• CPFE.
• Neumoconiosis.
• Others (Drugs, Genetic syndromes, etc.).

Question 7

Crazy paving differential diagnosis - Acute (5).

Answer 7

• Pulmonary edema.
• Hemorrhage.
• Infection.
• ARDS + DAD.
• Alveolar proteinosis.

Question 8

Crazy paving differential diagnosis-Chronic

Answer 8

• Hypersensitivity pneumonitis.
• NSIP.
• Sarcoidosis.
• Neumoconiosis.
• Silicosis.
• ARDS.

Question 9

Isolated irregular reticulation differential diagnosis (3)

Answer 9

• UIP and IPF.
• NSIP.
• HP.