Nodular interstitial patterns, such as centrilobular, perilymphatic, random, tree-in-bud, and bronchovascular patterns, can be tricky to interpret. Understand their pathophysiology and learn a practical approach for how to approach them. Learn how the presence of calcification can help you reach a diagnosis even quicker.

• Some of the case images in this talk appear courtesy of Ahmed El-Sherief, MD

• Suggested CaseStacks.com cases:

• https://www.casestacks.com/chest/chest-ct/nontraumatic/case-3/

• https://www.casestacks.com/chest/chest-ct/nontraumatic/case-4/

• https://www.casestacks.com/chest/chest-ct/practice/case-32/

• https://www.casestacks.com/chest/chest-ct/practice/case-33/

• https://www.casestacks.com/chest/radiographs/lung/classic-case20/