Dermatofibrosarcoma protuberans is an uncommon neoplasm that is most often seen
in young adults. The most common clinical presentation is the protruding form;
however, other subtypes are known, such as the atrophic. In 2012 there were only
33 reports of this variant in the literature. Many cases of Dermatofibrosarcoma
protuberans in children are only discovered in adulthood because they were not
diagnosed early. Due the high morbidity, we raise the need for attention from
the dermatologist to recognize uncommon neoplasms in the clinical practice. We
report a case of a 15-year-old patient diagnosed with atrophic
Dermatofibrosarcoma protuberans on the back.
Syringocystadenoma papilliferum and tubular apocrine adenoma are rare benign
sweat gland tumors. Syringocystadenoma papilliferum occurs alone or in
association with other tumors. Although it is rare, the association of tubular
apocrine adenoma with syringocystadenoma papilliferum developing in a sebaceous
nevus on the scalp is well documented. However, the co-existence of these two
tumors without the background of a sebaceous nevus has not been frequently
reported. Syringocystadenoma papilliferum and tubular apocrine adenoma may have
a histopathological overlap, but a few cases of a syringocystadenoma
papilliferum combined with a tubular apocrine adenoma have been reported. Herein
we describe an unusual case of syringocystadenoma papilliferum co-existing with
a tubular apocrine adenoma located on the back of a 14-year-old patient in the
absence of a pre-existing sebaceous nevus.
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