Mammographic features and risk of breast cancer death among women with invasive screen-detected cancer in BreastScreen Norway 1996-2020.

Objectives: We explored associations between mammographic features and risk of breast cancer death among women with small (<15 mm) and large (≥15 mm) invasive screen-detected breast cancer.

Methods: We included data from 17,614 women diagnosed with invasive breast cancer as a result of participation in BreastScreen Norway, 1996-2020. Data on mammographic features (mass, spiculated mass, architectural distortion, asymmetric density, density with calcification and calcification alone), tumour diameter and cause of death was obtained from the Cancer Registry of Norway.

Experience of pain during mammographic screening by three different compression paddles.

Introduction: Experience of pain during screening mammography is shown to affect further attendance negatively. We aimed to explore the experience of pain during screening mammography using three different breast compression paddles.

Methods: Using a self-report questionnaire, we collected information on pain experienced during mammography from 938 women screened in Bodø at Nordland Hospital County in 2018, as a part of BreastScreen Norway.

Does it matter for the radiologists' performance whether they read short or long batches in organized mammographic screening?

Objective: To analyze the association between radiologists' performance and image position within a batch in screen reading of mammograms in Norway.

Method: We described true and false positives and true and false negatives by groups of image positions and batch sizes for 2,937,312 screen readings performed from 2012 to 2018. Mixed-effects models were used to obtain adjusted proportions of true and false positive, true and false negative, sensitivity, and specificity for different image positions.

Time of day and mammographic reader performance in a population-based breast cancer screening programme.

Objectives: To analyse how reader performance varied by time during the day in a population-based breast cancer screening programme.

Methods: A total of 2,937,312 readings from 148 radiologists and 1,468,656 women were included in this study from Norway. Number and percentages of mammographic readings, positive scores, true and false positive readings, true and false negative readings, sensitivity and specificity were presented for categories of time of day and for each day of the week.

[Radiation-induced kidney diseases after treatment of juvenile neoplasms].

3 children with malignant tumors in one kidney were treated with radiation in doses of 30 (3 weeks), 35 (6 weeks), and 33 Gy (8 weeks). The clinical and histological findings of radiation-induced nephritis from 2 children are demonstrated. In the third case radiation was performed because of adrenocortical carcinoma.