Primary lymphoma of the breast: Unusual presentation of breast cancer

Objective: To investigate 4 cases of primary lymphoma of the breast and review previous studies in a search for any preoperative characteristics that could assist the diagnosis of lymphoma of the breast. Design: Retrospective study. Setting: University hospital, Israel. Subjects: 4 women. Main outcome measures: Accurate diagnosis before operation. Results: No special characteristics for early diagnosis of primary malignant lymphoma of the breast were found. The predominant involvement of right breast in primary lymphoma of the breast should be noted. Conclusions: Even though primary lymphoma of the breast is rare, there are no laboratory or imaging signs of early diagnosis. Excisional biopsy or Tru-cut biopsy are the only correct methods of diagnosis.