open access

Vol 17, No 1 (2021)
Case report
Published online: 2021-02-26
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Invasive breast cancer in ectopic axillary breast tissue — case report

Tomasz Sachańbiński, Maciej Miodoński, Barbara Radecka
DOI: 10.5603/OCP.2020.0025
·
Oncol Clin Pract 2021;17(1):42-45.

open access

Vol 17, No 1 (2021)
CASE REPORT
Published online: 2021-02-26

Abstract

Breast cancer is the most commonly diagnosed malignancy in women in Poland. Rare, unusual forms of breast cancer remain a diagnostic problem. The incidence of ectopic breast glandular tissue in the general population varies between 0.4 and 6%. The same abnormalities and diseases as in the anatomical mammary gland may develop in this tissue. Breast cancer may develop as well. We present the case of a 36-year-old woman, who went to the doctor because of a nodule in the right armpit presented for 2 years. The patient was referred to a surgeon with suspicion of an epidermal cyst. The lesion was surgically removed and in the histopathological examination, the diagnose was: invasive breast cancer in ectopic glandular tissue. After imaging diagnostics, discussion of a multidisciplinary diagnostic and therapeutic team, the patient was offered a surgical procedure - widening of the excision margins to obtain oncological completeness and axillary lymphadenectomy. After the surgery, due to the results of the histopathological examination, complementary systemic treatment (chemo- and hormone therapy) and radiotherapy were used. Doctors often do not consider the possibility of primary breast cancer occurring elsewhere than in the breast. Breast imaging does not always make it possible to diagnose the disease, and doctors performing and interpreting these tests often do not include primary armpit cancer in the differential diagnosis. This can cause a delay in diagnosis and worsen the prognosis.

Abstract

Breast cancer is the most commonly diagnosed malignancy in women in Poland. Rare, unusual forms of breast cancer remain a diagnostic problem. The incidence of ectopic breast glandular tissue in the general population varies between 0.4 and 6%. The same abnormalities and diseases as in the anatomical mammary gland may develop in this tissue. Breast cancer may develop as well. We present the case of a 36-year-old woman, who went to the doctor because of a nodule in the right armpit presented for 2 years. The patient was referred to a surgeon with suspicion of an epidermal cyst. The lesion was surgically removed and in the histopathological examination, the diagnose was: invasive breast cancer in ectopic glandular tissue. After imaging diagnostics, discussion of a multidisciplinary diagnostic and therapeutic team, the patient was offered a surgical procedure - widening of the excision margins to obtain oncological completeness and axillary lymphadenectomy. After the surgery, due to the results of the histopathological examination, complementary systemic treatment (chemo- and hormone therapy) and radiotherapy were used. Doctors often do not consider the possibility of primary breast cancer occurring elsewhere than in the breast. Breast imaging does not always make it possible to diagnose the disease, and doctors performing and interpreting these tests often do not include primary armpit cancer in the differential diagnosis. This can cause a delay in diagnosis and worsen the prognosis.

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Keywords

rare cases of breast cancer; ectopic glandular tissue; additional breast; axillary tumor

About this article
Title

Invasive breast cancer in ectopic axillary breast tissue — case report

Journal

Oncology in Clinical Practice

Issue

Vol 17, No 1 (2021)

Article type

Case report

Pages

42-45

Published online

2021-02-26

DOI

10.5603/OCP.2020.0025

Bibliographic record

Oncol Clin Pract 2021;17(1):42-45.

Keywords

rare cases of breast cancer
ectopic glandular tissue
additional breast
axillary tumor

Authors

Tomasz Sachańbiński
Maciej Miodoński
Barbara Radecka

References (18)
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