Abstract. Ørbo A, Rydningen M, Straume B, Lysne S. Significance of morphometric, DNA cytometric features, and other prognostic markers on survival of endometrial cancer patients in northern Norway.

The objective of this study was to evaluate the prognostic value of nuclear morphometric features and DNA ploidy by flow cytometry next to depth of myometrial invasion and vascular invasion in endometrial cancer of all FIGO stages.

A total of 123 women (103 FIGO stage I, eight stage II, and 12 stage III and IV) from northern Norway were studied. The follow-up period was between 7 and 19 years. The median age of patients was 62 years. The primary surgery was performed in the University Hospital of Tromsø or in the seven different reference hospitals in the northern part of Norway after an endometrial cancer diagnosis. The histologic, morphometric, flowcytometric and immunohistochemical investigations were based on archival paraffin-embedded material. The information regarding the follow-up data and clinical information were obtained from the medical records.

Thirteen (10.6%) patients from the entire group (all stages) but only three (2.7%) of the FIGO stage I and II patients died from locally recurrent or metastatic disease. FIGO substage (P = 0.0006; odds ratio [OR] = 16.44, 95% confidence interval [CI] = 3.36–80.45), vascular invasion (P = 0.01, OR = 6.42, CI = 1.57–26.34) and nuclear size (P = 0.025, 0 R = 1.3, CI = 1.05–1.61) were independently correlated with recurrence in a multivariate analysis but histologic grade and DNA ploidy were not. Vascular invasion was poorly reproducible both between and within the same observer, however.

In this retrospective study of all stages of endometrial carcinoma with long follow-up periods the primary tumor characteristics nuclear perimeter and FIGO stage were of prognostic significance in addition to the poorly reproducible vessel invasion.