Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-6-13
pubmed:abstractText
To clarify the role of foamy alveolar casts (FACs) in the diagnosis of Pneumocystis carinii pneumonia (PCP), we retrospectively reviewed Papanicolaou (Pap)- and Grocott methenamine silver (GMS)-stained slides from 205 bronchial specimens submitted for suspected opportunistic lung infection. FACs containing sporozoites were seen in 86 cases, all with positive GMS. FACs were absent in 119 cases with negative GMS. In patients previously treated for PCP, Pap showed FAC-like material which lacked sporozoites. GMS demonstrated clumped degenerated Pneumocystis carinii (PC) cysts. In 17 GMS-positive cases there were no FACs on Pap due to sampling error and low burden of organisms. Morphologic features of macrophages in these cases can suggest the presence of PC. When FACs are lacking, a special stain is required. When GMS is used, the control must contain PC to avoid a false negative GMS. The inconsistent uptake of GMS by PC is a pitfall which is distinct from sampling error and which to our knowledge has not been previously reported.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
8755-1039
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
41-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Cytology of treated and minimal Pneumocystis carinii pneumonia and a pitfall of the Grocott methenamine silver stain.
pubmed:affiliation
Department of Pathology, Hahnemann University Medical College and Hospital, Philadelphia, PA 19102-1192.
pubmed:publicationType
Journal Article, Comparative Study