We report herein the findings of a 7-year-old male child with a ruptured ad
renocortical adenoma and congenital hemihypertrophy which was incidentally
detected after suffering a trauma. A review of 21 pediatric cases of adreno
cortical neoplasms in the literature was made. The patient showed precociou
s puberty such as pubis and advanced bone age, but an endocrinological exam
ination revealed no definite abnormalities. The right adrenal tumor with he
matoma was resected after these evaluations. Adrenocortical adenoma is cons
idered to occur more frequently in female children. However, the incidence
of adrenocortical tumors accompanied by congenital hemihypertrophy does not
differ between males and females. The outcomes were relatively good, altho
ugh the observation periods were short in some patients. A large number of
patients presented with a tumor and hemihypertrophy on the same side. This
finding is of interest when considering the possible association between he
mihypertrophy of the organs and tumor proliferation. However, their associa
tion in terms of development was unclear. It is necessary for patients with
hemihypertrophy to have regular examinations for the possible development
of malignant tumors, especially in the kidney, adrenal gland, and liver.