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Maltoma
Pseudolymphoma
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Collections of
apparently benign lymphocytes which lack the usual invasive characteristics
of true lymphoma
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Lack of invasion of
extrapulmonary tissues in this disease
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Mixed cellular
infiltration (as opposed to uniform cellular infiltration of true lymphoma)
with mature lymphocytes predominating
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Other lesions
characterized by the presence of mature lymphocytes
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LIP
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Castleman’s
disease–lymph node hyperplasia
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Lymphomatoid
granulomatosis
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Well-differentiated
lymphocytic lymphoma
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Classically, there is
no involvement of the lymph nodes in the hilum or mediastinum
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May be associated with
Dilantin administration (as is true lymphoma and benign lymph node
hyperplasia)
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Asymptomatic
X-ray
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Dense infiltrate
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Invariably has air
bronchogram
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May also have nodules,
segmental consolidation or diffuse interstitial infiltration
"Masses" containing air bronchograms-differential diagnosis
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Lymphoma
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Pseudolymphoma (maltoma)
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Alveolar sarcoid
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Alveolar cell carcinoma
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