TY - JOUR
T1 - Regressing atypical histiocytosis
T2 - A cutaneous proliferation of atypical neoplastic histiocytes with unexpectedly indolent biologic behavior
AU - Flynn, Kevin J.
AU - Dehner, Louis P.
AU - Gajl‐Peczalska, Kazimiera J.
AU - Dahl, Mark V.
AU - Ramsay, Norma
AU - Wang, Nancy
PY - 1982/3/1
Y1 - 1982/3/1
N2 - Regressing atypical histiocytosis (RAH) of skin is a cutaneous noduloulcerative proliferation of atypical neoplastic histiocytes with concomitant polymorphous inflammation, frequently pronounced epidermal hyperplasia, and an unexpectedly indolent biologic course. Spontaneous regression and recurrence without systemic spread were the course in follow‐up periods of over six years. Histopathologically, characteristic‐appearing atypical mononuclear and multinucleated “RAH” cells showed erythrophagocytosis as well as ultrastructural, surface marker, and enzyme cytochemical features indicating histiocytic differentiation. Cytogenetic analysis showed aneuploidy and several marker chromosomes including 14q+. Its benign biologic course clearly distinguished this entity from malignant histiocytosis, large cell lymphoma, and Hodgkin's disease. The histiocytic atypical cells further distinguished it from the T‐cell lesions of the skin, such as mycosis fungoides and lymphomatoid papulosis. This entity is readily confused with malignant lymphoreticular disease, melanoma, or squamous carcinoma.
AB - Regressing atypical histiocytosis (RAH) of skin is a cutaneous noduloulcerative proliferation of atypical neoplastic histiocytes with concomitant polymorphous inflammation, frequently pronounced epidermal hyperplasia, and an unexpectedly indolent biologic course. Spontaneous regression and recurrence without systemic spread were the course in follow‐up periods of over six years. Histopathologically, characteristic‐appearing atypical mononuclear and multinucleated “RAH” cells showed erythrophagocytosis as well as ultrastructural, surface marker, and enzyme cytochemical features indicating histiocytic differentiation. Cytogenetic analysis showed aneuploidy and several marker chromosomes including 14q+. Its benign biologic course clearly distinguished this entity from malignant histiocytosis, large cell lymphoma, and Hodgkin's disease. The histiocytic atypical cells further distinguished it from the T‐cell lesions of the skin, such as mycosis fungoides and lymphomatoid papulosis. This entity is readily confused with malignant lymphoreticular disease, melanoma, or squamous carcinoma.
UR - http://www.scopus.com/inward/record.url?scp=0020086424&partnerID=8YFLogxK
U2 - 10.1002/1097-0142(19820301)49:5<959::AID-CNCR2820490521>3.0.CO;2-J
DO - 10.1002/1097-0142(19820301)49:5<959::AID-CNCR2820490521>3.0.CO;2-J
M3 - Article
C2 - 7059930
AN - SCOPUS:0020086424
SN - 0008-543X
VL - 49
SP - 959
EP - 970
JO - Cancer
JF - Cancer
IS - 5
ER -