Secondary hyperlipidemia is a common laboratory finding in children with ne
phrotic syndrome, diabetes mellitus, and hypothyroidism. However, clinical
signs of hyperlipidemia are extremely rare in childhood.
We report on an 11-year-old girl who presented with a disseminated yellow p
apulomatous rash on the lower limbs and yellow skin creases on the palms of
her hands. Blood tests yielded an opaque serum with a triglyceride concent
ration of 820 mg/dL and cholesterol of 1050 mg/dL. Skin biopsy of one of th
e papules confirmed the diagnosis of xanthomas.
Additional examinations revealed clinical (weight gain, diminished growth r
ate) and biochemical primary hypothyroidism (free T4: 0.4 ng/L [normal 8-22
ng/L]; thyroid-stimulating hormone: >200 mU/L) as a consequence of Hashimo
to thyroiditis (thyroid peroxidase and thyroglobulin: 4400 U/mL and >2000 U
/mL, respectively; normal <60 U/mL). The patient was started on L-thyroxine
, which led to a gradual decline of cholesterol and triglycerides to normal
concentrations and a complete remission from the xanthomatous rash.
For the first time, this case depicts disseminated xanthomas of the skin as
the presenting complaint of severe hypothyroidism.