Eccrine spiradenomas are rare, benign, cutaneous
tumors that originate in the
sweat glands.
Eccrine spiradenomas in the
breast are very rare and only a few cases have been reported. We
report here on the case of a 47-year-old
woman with superficial masses in the
breast and these masses had gradually increased in size during follow-up. They were confirmed to be an
eccrine spiradenoma on pathologic examination. There have been a few
reports about the radiologic findings of
eccrine spiradenomas of the
breast. This is the first case of an
eccrine spiradenoma in the
breast that was characterized by multiple imaging modalities, including
mammography,
ultrasonography and MRI. The lesion in our
patient was first diagnosed as an epidermal inclusion
cyst based on the imaging findings and the mass's superficial
location. Although the mammographic and
ultrasonographic imaging findings of
eccrine spiradenomas and epidermal inclusion
cysts are
similar, the MRI findings are different between epidermal inclusion
cysts and
eccrine spiradenomas.
Eccrine spiradenomas should be considered in the
differential diagnosis of cutaneous and subcutaneous lesions of the
breast.