Intravascular lymphomatosis (IVL) is characterized by an intravascular
proliferation of atypical mononuclear cells of haematopoietic origin
occluding small blood vessels including venules, capillaries and small
arteries, and can affect virtually any organ in the body. Clinically,
the most common manifestations are involvement of the skin and centra
l nervous system, although various organ involvement has been describe
d. We report a patient who presented with fever and rash, and succumbe
d with acute neurological symptoms and systemic inflammatory response
syndrome (SIRS) with no evidence of infection, The postmortem revealed
disseminated involvement of virtually every organ with IVL, the malig
nant cells being of T-cell origin, which may secrete cytokines includi
ng tumour necrosis factor and interleukin-1, that are believed to be m
ediators in SIRS. In the absence of evidence of infection on microbiol
ogy and pathology, we postulate that the features of SIRS in this pati
ent was due to the disseminated malignancy itself.