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Kerley B lines:
CHF, lymphangitic spread of CA; less common � viral, asbestosis, sarcoid, lymphoma
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Pulmonary fibrosis:
IPF, sarcoid, pneumoconiosis, histiocytosis, CVD, talc, radiation, drugs, chronic hypersensitivity pneumonitis, NF
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Lymphangitic carcinomatosis:
lung, breast, stomach, pancreas, prostate, thyroid
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Hematogenous pulmonary mets:
lung, breast, kidney, thyroid, colon, uterus, head&neck, testes, melanoma, lymphoma, osteosarcoma
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Solitary pulmonary nodule:
granuloma (TB, fungus esp histo, sarcoid), hamartoma, lung CA, met, lymphoma, AVM, hematoma, infarct, chest wall lesion, nipple shadow, bronchial adenoma, cyst, abscess, rheumatoid nodule, fissural pseudotumor, rounded atelectasis, round PNA, carcinoid, bronchopulmonary sequestration, bronchogenic cyst, plasma cell granuloma, PTLD
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Multiple nodules:
hematogenous mets, lymphoma (usu NHL), granuloma (TB, fungal, sarcoid), hamartoma, AVMs, Nocardia, parasite, septic emboli (Staph aureus), rheumatoid nodules, Wegener�s, posttraumatic hematomas, healed rib fxs, silicosis, multiple abscesses, lymphomatoid granulomatosis, amyloidosis, KS, Langerhans cell histiocytosis, PTLD
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Miliary nodules:
(3-5mm) TB, fungi (esp histo), mets (melanoma, RCC, chorioCA, thyroid), sarcoid, silicosis, Langerhans cell histiocytosis, varicella, talc, alveolar microlithiasis (1mm)
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Calcified nodules:
thyroid mets, mucinous mets, osteogenic mets, varicella, TB, histo, cocci, silicosis, alveolar microlithiasis
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Peribronchovascular nodules:
sarcoid, LC, KS, lymphoma
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