A Case of Eruptive Collagenoma on the Left Calf.
Eruptive collagenoma is an acquired connective tissue nevus without family history. It is typically described as numerous small papules or nodules on the trunk and arms with histopathological features of decreased or degenerated elastic fibers. We report a case of a 16-year-old male who presented with multiple asymptomatic 2 to 5 mm sized yellowish grouped papules on the left calf. Histopathologically, the lesion showed thickened homogenized collagen fibers highlighted by Masson trichrome stain and decreased and fragmented elastic fibers stained by Verhoeff-van Gieson stain. The skin lesion was diagnosed as eruptive collagenoma and no treatment was provided.
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Min Hee
MH
Kang
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Hyun Joon
HJ
Kim
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Young Ju
YJ
Seo
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Eun Ju
EJ
Park
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Chul Woo
CW
Kim
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Hee Jin
HJ
Cho
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Kwang Ho
KH
Kim
Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.
Kwang Joong
KJ
Kim
Eruptive collagenoma