A dumbbell tumor is any tumor that is constricted in the middle, giving it the shape of an hourglass or dumbbell. In the spine, dumbbell tumors consist of one part of the tumor inside the spinal …

Jul 19, 2024 · Dumbbell tumor. A more complex nerve sheath tumor may assume the shape of a dumbbell. This type of tumor occurs in the spine and lower abdomen and is intertwined with …

Jan 10, 2025 · Dumbbell tumor. A more complex nerve sheath tumor may assume the shape of a dumbbell. This type of tumor occurs in the spine and lower abdomen and is intertwined with …

Dumbbell‐shaped tumors account for 6%–14% of all spinal neoplasms. Approximately 35% of all neurinomas of the spinal canal originate in the thoracic region1. Tumors with both intraspinal …

The term “dumbbell tumor” was initially introduced by Heuer in 1929 to describe spinal tumors that acquire an hourglass shape as they encounter an anatomic barrier, such as dura mater, a …

A more complex nerve sheath tumor may assume the shape of a dumbbell. This type of tumor occurs in the spine and lower abdomen and is intertwined with important nerves.

Dumbbell tumors look like two connected parts and go through a hole in the spine. They can start inside a special membrane around the spinal cord. They might also touch bones and other …

Dumbbell-shaped thoracic neurofibroma represents a distinct type of tumor and can involve both the spinal canal and the posterior thoracic cavity. Dumbbell tumors are those with an …

Nov 13, 2017 · The dumbbell appearance of spinal tumors refers to a tumor which has both a component within the canal and a component in the paravertebral space contiguous with each …

In particular, intra- and extra-pelvic sciatic notch dumbbell-shaped tumors [sciatic notch dumbbell tumors (SNDTs)] may cause classic sciatica by invading the sacrum, sacral plexus, and sciatic …