Mammary adenoid cystic carcinoma presenting with Ductal carcinoma in situ and axillary lymph node metastasis

Author:

Burusapat Chairat1,Buarabporn Naphan2,Wongchansom Kittisak3,Chanapai Pongsit3,Parinyanut Parinya45,Supaporn Surapong4

Affiliation:

1. Division of Plastic and Reconstructive Surgery, Department of Surgery, Phramongkutklao Hospital and Phramongkutklao College of Medicine, Bangkok, Thailand

2. Division of Plastic and Reconstructive Surgery, Department of Surgery, Phramongkutklao Hospital, Bangkok, Thailand

3. Department of Pathology and Laboratory Medicine, Phramongkutklao Hospital, Bangkok, Thailand

4. Division of Breast Surgery, Department of Surgery, Phramongkutklao Hospital, Bangkok, Thailand

5. Department of Surgery, Faculty of medicine, Naresuan University, Phitsanulok, Thailand

Abstract

Abstract Mammary adenoid cystic carcinoma (ACC) is extremely rare tumors, comprising <0.1% of all breast cancers. Moreover, lymph node metastasis is <2% of mammary ACC. Here, we report a case of 51-year-old female presented with painful mass on her left breast and left axillary lymph node enlargement. Core needle biopsy revealed invasive ductal carcinoma. Left lumpectomy and axillary lymph nodes dissections were performed. The final pathological report showed triple-negative mammary ACC arising with high grade ductal carcinoma in situ (DCIS) and axillary lymph node metastasis. Immunohistochemistry study is useful in confirming a diagnosis. Given the rarity of this cancer, natural history of disease is still not clearly understood. Complete surgical excision is the mainstay of treatment. To our best knowledge, mammary ACC presenting with DCIS and axillary lymph node metastasis has never been reported and should be considered in the differential diagnosis of breast cancers.

Publisher

Oxford University Press (OUP)

Subject

Surgery

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