What is an adnexal lesion?

What is an adnexal lesion?

A lump in tissue near the uterus, usually in the ovary or fallopian tube. Adnexal masses include ovarian cysts, ectopic (tubal) pregnancies, and benign (not cancer) or malignant (cancer) tumors.

What causes adnexal lesion?

Pelvic inflammatory disease or other causes of tubo-ovarian abscesses (i.e., collections of pus in the ovaries and fallopian tubes) can also cause adnexal masses. If the mass is suspected to be malignant, ovarian cancer is the most common cause.

What causes lesions in the pelvis?

Causes of bone lesions include infections, fractures, or tumors. When cells within the bone start to divide uncontrollably, they are sometimes called bone tumors. Most bone lesions are benign, meaning they are not cancerous. Some bone lesions are cancerous, however, and these are known as malignant bone tumors.

What percent of dermoid cysts are cancerous?

Although the large majority (about 98%) of these tumors are benign, the remaining fraction (about 2%) becomes cancerous (malignant). Removal of the dermoid cyst is usually the treatment of choice.

Do lesions go away?

“Paradoxically, we see that lesion volume goes up in the initial phases of the disease and then plateaus in the later stages,” said Zivadinov. “When the lesions decrease over time, it’s not because the patient lesions are healing but because many of these lesions are disappearing, turning into cerebrospinal fluid.”

What is a left adnexal cystic lesion?

An adnexal mass is an abnormal growth that develops near the uterus, most commonly arising from the ovaries, fallopian tubes, or connective tissues. The lump-like mass can be cystic (fluid-filled) or solid. While most adnexal masses will be benign (noncancerous), they can sometimes be malignant (cancerous).

Is a dermoid cyst a teratoma?

Most ovarian teratomas are mature. The mature ovarian teratoma is also known as a dermoid cyst. About 1 to 3 percent of mature ovarian teratomas are cancerous. They’re usually found in women during their reproductive years.

How accurate is magnetic resonance imaging for perianal fistula assessment?

Magnetic resonance (MR) imaging has been shown to demonstrate accurately the perianal anatomy. In this article, we review the anatomy of the perianal region, causes of perianal fistulas, and surgical management; previous methods for preoperative assessment; and useful MR imaging protocols for this evaluation.

What is the pathophysiology of perianal fistula?

Perianal fistulas may be caused by several inflammatory conditions and events, including Crohn disease, pelvic infection, tuberculosis, diverticulitis, trauma during childbirth, pelvic malignancy, and radiation therapy. However, most are idiopathic and are generally thought to represent the chronic phase of intramuscular anal gland sepsis.

How is the anatomy of the perianal region shown in MR imaging?

Magnetic resonance (MR) imaging has been shown to demonstrate accurately the anatomy of the perianal region. In addition to showing the anal sphincter mechanism, MR imaging clearly shows the relationship of fistulas to the pelvic diaphragm (levator plate) and the ischiorectal fossae.

What is a superficial fistula?

A superficial fistula is a fistula that has no relation to the sphincter or the perianal glands and is not part of the Parks classification. These are more often due to Crohns disease or anorectal procedures such as haemorrhoidectomy or sphincterotomy. MR Protocol and Reporting