title: Palpable right breast mass in a pregnant woman.
abstract: BACKGROUND
  A 29-year-old female presented with a palpable right breast mass at a 12-week prenatal visit. She had no family history of breast or ovarian cancer. Ultrasound revealed a 3 cm lobulated mass, which was confirmed to be malignant by a core biopsy. Postmastectomy pathology at 15 weeks' gestation demonstrated this mass to be a stage T2N0M0 high-grade invasive ductal carcinoma with 0/20 axillary nodes involved. A staging CT scan postpartum showed an enlarged right internal mammary lymph node, confirmed by MRI as suspicious for malignancy.
  
  
  METHODS
  Physical examination, breast ultrasound, core biopsy, mastectomy, CT scan, MRI.
  
  
  METHODS
  Pregnancy-associated breast carcinoma.
  
  
  RESULTS
  Mastectomy, chemotherapy and radiotherapy.
authors.affiliation: Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA. mskatz@partners.org
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Katz
authors.forename: Lidia
authors.initials: L
authors.lastname: Schapira
authors.forename: Mukesh G
authors.initials: MG
authors.lastname: Harisinghani
authors.forename: Kevin S
authors.initials: KS
authors.lastname: Hughes
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000473:pathology* / Q000628:therapy; D018270:Carcinoma, Ductal, Breast / Q000556:secondary* / Q000628:therapy; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D005260:Female; D005865:Gestational Age; D006801:Humans; D008207:Lymphatic Metastasis; D008279:Magnetic Resonance Imaging; D008408:Mastectomy; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic / Q000473:pathology* / Q000628:therapy; D014057:Tomography, X-Ray Computed