Eccrine porocarcinoma is a rare malignancy of the eccrine sweat gland. It is usually found frequently on the lower extremities, and it affects both sexes equally usually in the sixth to seventh decade. In our case, we present a 42-year-old male patient with a recurring exophytic tumor on the right lower extremity without local extension. The initial tumor was biopsied, excised and diagnosed as an eccrine poroma. The tumor then recurred 6 years later, was re-excised, reconstructed with a soleus muscle flap and diagnosed as an eccrine porocarcinoma.

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Adenoid cystic carcinoma of the breast (ACC) is a rare tumor, comprising <0.1% of all breast cancers. It has a unique dual-cell pattern and is indistinguishable from ACC arising from salivary tissue. It is a low-grade tumor with favorable prognosis, and rare metastasis, with unique features. It is more commonly seen in older women with a mean age at diagnosis of 63, with Caucasian women being at greatest risk. Most cases present as a painful, palpable mass in the outer quadrants of the breast, and must be diagnosed via core needle biopsy or surgical excisional biopsy. Although few other cancers resemble ACC it is commonly misdiagnosed. Given the rarity of this cancer, treatment guidelines have yet to be well established. Current treatment is focused around surgical resection, however, there are not specific recommendations for the extent of resection due to the lack of cases to draw from.

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