They are known as the anterior cranial fossa, middle cranial fossa and posterior cranial fossa. Each fossae accommodates a different part of the brain. The anterior cranial fossa is the most shallow and superior of the three cranial fossae. It lies superiorly over the nasal and orbital cavities.
Benign prostatic hyperplasia: A common, noncancerous enlargement of the prostate gland. The enlarged prostate may compress the urinary tube (urethra), which courses through the center of the prostate, impeding the flow of urine from the bladder through the urethra to the outside. Abbreviated BPH. If BPH is severe enough, complete blockage can occur.
In the medical world, it means not carrying disease. A benign tumor would be one that is not cancerous. A malignant tumor would be one that is cancerous. So if they found a lump on your lung and did surgery - you want them to say the lump is benign, meaning it was just an abnormal growth. If they say it is malignant, it is formed from cancer cells and chemotherapy and surgery are in your future.