The utility of a touch preparation in the diagnosis of fluctuant subcutaneous fat necrosis of the newborn.
Subcutaneous fat necrosis of the newborn (SFNN) is an uncommon self-limiting panniculitis. Lesions may be fluctuant and spontaneously drain. Here we report a technique to rapidly confirm the diagnosis of SFNN when fluctuance exists via a touch preparation that demonstrates the characteristic histologic features of this condition. The material can be collected by fine needle aspirate, from draining fluctuant lesions, or if biopsy if performed.
Department of Dermatology, Marshfield Clinic, Marshfield, Wisconsin 54449, USA.
Jared J
JJ
Lund
Ling
L
Xia
Sarah
S
Kerr
Erik J
EJ
Stratman
Stella F
SF
Patten
D001707:Biopsy, Needle; D003581:Cytodiagnosis; D005218:Fat Necrosis / Q000175:diagnosis*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D050151:Subcutaneous Fat / Q000473:pathology*