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KMID : 0363219970350010169
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Korean Journal of Dermatology
1997 Volume.35 No. 1 p.169 ~ p.173
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A Case of Pedunculated Pigmented Eccrine Poroma Combined with Congenital Melanocytic Nevus on the Scalp
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Abstract
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It has been generally assumed that eccrine poroma arises from acrosyringium, the epidermal sweat duct unit. Eccrine poroma mainly involves the non-hairy surfaces of the skin, but it has also been found on hair-bearing areas. One of the
characteristics
of this structure is absence of melanocytes and melanin granules among its cells, However, a complete absence of melanocytes and melanin granules in eccrine poroma is not invariable and a few reports of such an occurrence have been presented.
The authors report herein a case of unusual and rare eccrine poroma. The eccrine poroma had melanin pigment and melanocytes, was pedunculated and occurred on the parietal scalp which was the unusual site of involvement. The eccrine poroma was
also
combined with a pedunculated congenital melanocytic nevus on the supraauricular scalp. (Kor J Dermatol 1997;35(1) : 169∼173)
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