原發性乳房淋巴瘤是一罕見的疾病，在所有女性的乳房惡性腫瘤中只占了0.12%至0.30%。病例報告常常是零星出現。因為缺乏病人資料，目前為止對於原發性乳房淋巴瘤尚未結論出標準的治療方式。本文報告了二位原發性乳房淋巴瘤的病患，治療方式是以化學治療合併放射治療。在治療完成後，淋巴瘤完全消失並且沒有殘存腫瘤。在追蹤過程中也沒有腫瘤再發的情形。這篇文章同時也回顧了文獻上有關原發性乳房淋巴瘤的報告，並對治療結果與預後作一討論。

Primary breast lymphoma is a rare disease. It represents only 0.12% to 0.30% of all female breast malignancies. Few cases were sporadically reported. Due to the paucity of patient data, there is no standard treatment protocol for primary breast lymphoma. We reported two cases of primary breast lymphoma treated with chemotherapy followed by radiotherapy. Tumor regression with no residual disease was achieved after treatments. No relapse was developed in the follow-up period. We also reviewed the literatures on primary breast lymphoma to evaluate treatment outcome and prognosis.