Consistent publication in consecutive versions in Cancer in Five Continents was taken as a proxy measure of quality of the cancer registry, including high levels of morphological verification and low levels of cancers identified only through death certificates.
A relatively low proportion of morphological verification is in part, however, the result of highly qualified medical personnel using radiological and other less costly evidence for determining cancer diagnoses; cases more often present with metastatic disease.
NPC incidence and mortality data in 2010 were collected from 145 domestic cancer registries with data quality that met the criteria of National Center for Cancer Registration; namely, the percentage of cases with morphological verification (MV%), >66%; the percentage of cases with death certification only (DCO%), <15%; and ratio of mortality to incidence (M/I), 0.6 0.8.
The proportion of cases with morphological verification was 93.11% (3,164/3,398), with no breast cancer cases recognized by death certificate only.
These include the percentages of registered cancer cases by death certificate only, and morphological verification, and percent missing.
The first section was stained with hematoxylin-eosin for traditional morphological analysis and verification of diagnosis by not less than two independent pathomorphologists.
As a result, a database of ca. 1600 photographs is available for later verification of morphological characters.
Additional tests for shorter times allowed verification of the morphological evolution of the wear track.
AFM has proved to be very helpful in the determination and verification of various morphological features and parameters.
The plant phylogenetics module engaged students in an experimental sequence including observation of morphological characteristics, DNA extraction, amplification, and verification of polymerase chain reaction (PCR) product, immersing them in an authentic experience consistent with current laboratory research practices.
