deciduous tree in winter appearance
IMMUNOLOGY, NEPHROLOGY, PATHOLOGY
Deciduous tree in winter appearance is a descriptive term for the clumped granular deposits of IgA seen by immunofluorescence microscopy in the glomerular mesangium in IgA nephropathy, which have been fancifully likened to th branches of a deciduous tree in winter after its leaves have fallen off. IgA deposition may be
followed by IgG and IgM deposition. Vasculocentric deposits also appear in the dermis, confirming the immune complex origin of this condition.
Reference Diagnostic Immunopathology: Laboratory Practice & Clinical Application, Zola H, et al, 1995