title: Mammographycally occult high grade ductal carcinoma in situ (DCIS) as second primary breast cancer, detected with MRI: a case report.
abstract: BACKGROUND
  Contralateral breast cancer (CLB) is the most common second primary breast cancer in patients diagnosed with breast cancer. The majority of patients harbouring CLB tumours develop the invasive disease. Almost all invasive carcinomas are believed to begin as ductal carcinoma in situ (DCIS) lesions. The sensitivity of MRI for DCIS is much higher than that of mammography.
  
  
  METHODS
  We report the case of a woman who was treated with breast conserving therapy 10 years ago. At that time the invasive medullary carcinoma was diagnosed in the left breast. Ten years later mammographically occult DCIS was diagnosed with MRI-guided core biopsy in contralateral breast.
  
  
  CONCLUSIONS
  There might be a potential role of MRI screening as part of an annual follow-up for patients diagnosed with breast cancer.
authors.affiliation: Department of Radiology, Institute of Oncology Ljubljana, Slovenia.
authors.forename: Marta
authors.initials: M
authors.lastname: Zebic-Sinkovec
authors.forename: Maksimiljan
authors.initials: M
authors.lastname: Kadivec
authors.forename: Gasper
authors.initials: G
authors.lastname: Podobnik
authors.forename: Erik
authors.initials: E
authors.lastname: Skof
authors.forename: Marko
authors.initials: M
authors.lastname: Snoj