Schwannoma (neurilemoma)

GENERAL INFORMATION • Benign soft tissue tumor arising from a peripheral nerve sheath (epineurium) derived from a schwann cell.  • Also known as Neurilemoma• Arises from the periphery of the nerve, epineurium • The nerve is displaced eccentrically• Small...

Proliferative Myositis

Proliferative myositis is an intramuscular reactive process. It is identical in appearance to proliferative fasciitis, except its locations is within skeletal muscle. Patients usually present with a painless mass on the upper arm or trunk. This disease is cured by...

Plantar Fibromatosis

Plantar fibromatosis is a type of superficial fibromatosis that affects the plantar aspect of the foot and its subcutaneous fat. One third of patients diagnosed with this disease are younger than 30 years of age and children may occasionally be affected. Usually...

Nodular Fasciitis

Nodular fasciitis is a reactive process that can occur in patients of all ages, but most commonly occurs between 20-40 years of age. While it can occur within any site of the body, the upper extremities–especially the forearms–are the most frequent site...

Myositis Ossificans

GENERAL INFORMATION Myositis ossificans is a benign intramuscular mass usually caused by an injury. It can form directly in a muscle or form closely applied to the surface of a bone. Also called benign fibro-osseous lesion or heterotopic ossification is composed of...

Myofibroma

Myobroma is a pediatric type of tumor. It may arise in one area or occur in multiple sites. It contains nodules of spindle cells that appear to be related to smooth muscle and less differentiated cells that are small, round, and basophilic. These are rare tumors and...