Atypical pneumonia clusters

Primary Atypical Pneumonia

Primary atypical pneumonia.

Many recent communications to the medical literature on primary atypical pneumonia have emphasized the difficulty of differentiating that disease from other pneumonic consolidations from the roentgenogram I t is generally recognized that the various pulmonary inflammations do, on x-ray examination, have a tendency to group types: there are so-called "typical" pictures for pneumococcal lobar con...

Atypical Pneumonia and Psittacosis.

Histologically atypical Pneumocystis carinii pneumonia.

BACKGROUND Infection with Pneumocystis carinii typically results in a pneumonia which histologically is seen to consist of an eosinophilic foamy alveolar exudate associated with a mild plasma cell interstitial infiltrate. Special stains show that cysts of P carinii lie within the alveolar exudate. Atypical histological appearances may occasionally be seen, including a granulomatous pneumonia an...

Studies on Primary Atypical Pneumonia

A factor present in fresh normal human or guinea pig serum enhances the primary atypical pneumonia (PAP) antibody titers in serological reaction with its homologous virus as tested by indirect fluorescent antibody staining. This factor is not properdin. It has many properties similar to complement but may not be identical with complement. The addition of this enhancement factor to human sera co...