[Further Development and Interoperability in Oncological Care Structures, Quality Control and Research].

How can we improve the interoperability of medical guidelines and the implementation and measurement of outcomes in medical health care for cancer patients as well as for care providers? This is the aim of the working group "Quality and Cross-linking". The following publication gives an overview of the targets reached in the development of guidelines together with quality indicators and documentation in cancer registries.

[Quality management in oncology supported by clinical cancer registries].

Efforts in nationwide quality management for oncology have so far failed to comprehensively document all levels of care. New organizational structures such as population-based clinical cancer registries or certified organ cancer centers were supposed to solve this problem more sufficiently, but they have to be accompanied by valid trans-sectoral documentation and evaluation of clinical data. To measure feasibility and qualitative effectiveness of guideline implementation we approached this problem with a nationwide investigation from 2000 to 2011.

No Survival Benefit for Patients with Treatment in Certified Breast Centers-A Population-based Evaluation of German Cancer Registry Data.

Much time and money has been spent on the establishment and preservation of certified breast centers (CBCs), but up to now there is almost no evidence for whether certification results in an improved outcome for breast cancer patients. The aim of this evaluation was to assess, whether the certification of specialized units had any influence on their patients' outcomes and if a survival difference between CBC patients and non-CBC patients can be shown. This population-based analysis included cancer registry data from 32,789 operated breast cancer patients with no prior cancer diagnosis and with active follow-up.

Risk of contralateral second primary breast cancer according to hormone receptor status in Germany.

Introduction: Hormone receptor (HR) status has become an established target in treatment strategies of breast cancer. Population-based estimates of contralateral breast cancer (CBC) incidence by HR subtype in particular are limited. The aim of this study was to provide detailed data on CBC incidence for Germany.

Population-based hormone receptor-specific incidence trends of breast cancer in Germany.

Objectives: Several countries reported a drop in prescription of hormone replacement therapy (HRT) in the 2000s, followed by decreases in breast cancer incidence among postmenopausal women aged 50-69 years. The aim of this study was to provide hormone receptor specific incidence rates of breast cancer in Germany.

Methods: Breast cancer data were extracted from the cancer registries of the Federal States of Brandenburg and Saarland and the area of Munich for the period from 1998 to 2007.