RT Journal
A1 Warnick M, Singh S, Boisvert ME, Peck GL
T1 Merkel cell carcinoma presenting as lymphadenopathy without a primary cutaneous lesion: A report of 2 cases
JF Archives of Dermatology
JO Archives of Dermatology
YR 2008
FD October 1
VO 144
IS 10
SP 1397
OP 1398
DO 10.1001/archderm.144.10.1397
UL http://dx.doi.org/10.1001/archderm.144.10.1397
AB 
Merkel cell carcinoma (MCC) is an aggressive, uncommon, neuroendocrine malignant neoplasm of the skin. There have been rare reports of MCC presenting as lymphadenopathy with no apparent cutaneous primary lesion.1 This may result from complete regression of a primary cutaneous MCC. Histologically, nodal MCC must be differentiated from other similar neuroendocrine malignant neoplasms.2 Herein, we describe 2 additional patients diagnosed as having MCC presenting only with lymphadenopathy.