Gross genomic alterations differ between serous borderline tumors and serous adenocarcinomas--an image cytometric DNA ploidy analysis of 307 cases with histogenetic implications.
Our objective was to study the gross genomic alterations in serous borderline tumors and serous adenocarcinomas of the ovary. A retrospective analysis of 245 serous borderline tumors and 62 serous adenocarcinomas from 249 patients was performed using high-resolution image cytometric DNA ploidy analysis. DNA ploidy status, S-phase fraction, and DNA index were evaluated. The majority of serous borderline tumors were diploid (225/245 cases, 92%). The remaining 8% showed an aneuploid peak predominantly with DNA index of less than 1.4. Grades 2 and 3 serous adenocarcinomas were more often (80%) nondiploid, mostly with DNA index exceeding 1.4. Grade 1 serous adenocarcinomas were an intermediate group, more similar to serous borderline tumors. The S-phase fraction increased from serous borderline tumors (mean = 0.6%) through grade 1 serous adenocarcinomas (mean = 2.8%), being highest in grades 2 and 3 adenocarcinomas (mean = 6.8%). Our findings support the hypothesis that serous borderline tumors and grades 2 and 3 serous adenocarcinomas are genomically different lesions, with grade 1 serous adenocarcinomas being an intermediate group more close to borderline tumors.
Division of Pathology, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway.
Manohar
M
Pradhan
Ben
B
Davidson
Claes Göran
CG
Tropé
Håvard Emil
HE
Danielsen
Vera Maria
VM
Abeler
Björn
B
Risberg
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000782:Aneuploidy; D002467:Cell Nucleus / Q000737:chemistry / Q000473:pathology; D015331:Cohort Studies; D018284:Cystadenocarcinoma, Serous / Q000235:genetics* / Q000473:pathology; D004273:DNA, Neoplasm / Q000032:analysis*; D005260:Female; D006801:Humans; D019044:Image Cytometry / Q000379:methods*; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000235:genetics* / Q000473:pathology; D011230:Precancerous Conditions / Q000235:genetics* / Q000473:pathology; D012189:Retrospective Studies; D016196:S Phase; D055815:Young Adult
D004273:DNA, Neoplasm