Retrospective evaluation of gynecologic cytodiagnosis. II. Interlaboratory reproducibility as shown in rescreening large consecutive samples of reported cases.

Two laboratories exchanged and rescreened a large sample of cases with cervicovaginal smears they had consecutively accessioned to examine the reproducibility of gynecologic cytodiagnosis under optimum conditions. At least a "working agreement" (diagnoses within +/- 1 category on a ten-category scale) was achieved in diagnoses of normal, benign reaction and squamous abnormality (from minimal dysplasia though invasive cancer) in 18,859 cases (96.8%), of endometrial abnormality in 21 cases (42%) and of "unsatisfactory" in 99 cases (20.

Retrospective evaluation of gynecologic cytodiagnosis. I. Reproducibility using an experimental diagnostic scale.

A system for the exchange of specimens between two independent laboratories ("A" and "B") was designed to enable them to review a consecutive series of one another's gynecologic smears. Another cytopathologist "refereed" diagnoses differing beyond agreed limits and examined all smears called carcinoma in situ or a more severe lesion by either laboratory. A ten-numeral gradient nomenclature scale was developed to code all cytodiagnoses for data processing.

Recognition of a second serogroup of Legionella longbeachae.

A strain of Legionella longbeachae (Tucker 1) that was isolated from the postmortem lung tissue of a pneumonia patient was serologically distinct from four other strains of L. longbeachae. The recognition of a second serogroup of L.