Formanalyse von 153 Mikroverkalkungsgruppen maligner Genese: Das „Dreieckprinzip”

Abstract

The forms and outlines of 153 clustered microcalcifications in 114 patients with histologically proven intraduct carcinomas were analysed. Seven groups could be defined; of these, a triangle principle"). The smaller groups tended to have straight margins, but the larger groups often showed wavy contours and at least one indentation at the base ("Swallow-tail phenomenon"). At the same time, the larger groups show circumscribed areas free of microcalcification, which correspond to interductal fat deposition. All these radiological appearances can be related to the anatomical structures of the lactiferous ducts.

Microcalcifications of the breast: how does radiologic classification correlate with histology?

“…We faced particular problems in the recommendation of a biopsy in patients with indeterminate microcalcifications in a round or oval cluster, according to our criteria H a BI-RADS H 3 lesion. Although LANYI claims that he has never observed a malignancy with round or oval distribution patterns in 153 clusters of microcalcifications (11), the distribution pattern ''round or oval'', particularly in small clusters with a diameter of 5 mm to 10 mm, cannot always be discriminated definitively from small regional/segmental distributions. As lesions in high-risk patients (for definition, see Material and Methods section) have a higher pretest probability for breast cancer per se, we recommend a vacuum core biopsy in these patients.…”

Breast Microcalcifications as Type Descriptors to Stratify risk of Malignancy: a Systematic Review and Meta-Analysis of 10665 Cases with Special Focus on Round/Punctate Microcalcifications

“…The subgroup analysis showed a significant higher risk for lesions with more than 10 particles compared to less than 10 particles. Lanyi [4,62,64] found that microcalcifications with a round/oval disposition were less likely to be malignant than microcalcifications with geometric dispositions suggestive of the mammary ductal system (triangle principle). Analysis of the distribution of microcalcifications within clustered, round/punctate microcalcifications for risk stratification based on the earlier work of Lanyi was proposed by the consensus conference of the German Radiological Society [66].…”