Although normally benign, idiopathic renal hypouricemia may increase the risk of exercise-induced acute renal failure.

People fight sickness with their immune system, but if your disease-fighting guard works overtime, it can lead to allergies stemming from normally benign proteins from pet dander.

Could Face Heavy Fines Sludge, the end product of the sewage-treatment process, is normally benign.

Rather, the powerful weather maker plays an indirect role, fostering a climate that is conducive to turning Florida's normally benign winter thunderstorms into more severe ones.

Though they were normally benign, a whiff of blood would draw them in hordes and trigger a feeding frenzy.

Nodules are normally benign and often painless, although they can affect the functioning of the organ.

The normally benign organisms quickly grew Shigella-like actin tails and began thrusting through the cell extracts like earthworms through dirt.

Father's normally benign expression did not change.

Giant cell tumors are normally benign, with unpredictable behavior.

The normally benign face was mottled red; he carried a stout stave, which he swung in short ominous jerks.