A practical, concise manual for diagnosing biopsy specimens. It clarifies accepted diagnostic criteria for non-neoplastic lung diseases; establishes new criteria where needed; and emphasises the important features in differential diagnosis. A generous bibliography is provided so that you can obtain more in-depth details if desired. The result is enough clearly presented information to enable you to diagnose the majority of non-neoplastic lung diseases without the need for an 'expert' opinion.