What is retroperitoneal teratoma?
Conclusions: Retroperitoneal teratomas are uncommon lesions in children mostly arising in close relation to the kidneys. The majority are benign but complete excision is necessary for cure. Even large tumors with bilateral involvement of the retroperitoneum can be excised while preserving adjacent organs.
Is mature cystic teratoma malignant?
In its pure form, mature cystic teratoma is always benign. Malignant transformation (MT) is an uncommon complication of a mature cystic teratoma. It occurs in approximately 1-3% of all MCT cases, although in one report the frequency was as high as 6.67% [3-5].
What is a mature cystic teratoma?
Mature cystic teratoma (MCT), a benign tumor commonly called the dermoid cyst, is the most common type of ovarian germ cell tumors. Over 80% of cases present in reproductive periods, especially in women under the age of 40.
Are mature teratomas cancerous?
They are benign (not cancer) but may come back after being removed by surgery. Mature teratomas usually occur in the sacrum or tailbone in newborns or in the testicles or ovaries at the start of puberty. They are often called dermoid cysts.
What causes a cystic teratoma?
What Causes Teratoma? Teratomas happen when complications arise during your cells’ differentiation process. In particular, they develop in your body’s germ cells, which are undifferentiated. This means they can turn into any type of cell – from egg and sperm to hair cells.
How common are mature teratomas?
Mature cystic teratomas account for 10-20% of all ovarian neoplasms. They are the most common ovarian germ cell tumor and also the most common ovarian neoplasm in patients younger than 20 years. They are bilateral in 8-14% of cases. The incidence of all testicular tumors in men is 2.1-2.5 cases per 100,000 population.
What causes mature teratoma?
How is mature teratoma treated?
Women with benign (non-cancerous) germ cell tumors such as mature teratomas (dermoid cysts) are cured by removing the part of the ovary that has the tumor (ovarian cystectomy) or by removing the entire ovary.
How can you tell if a teratoma is cancerous?
They may also order tests, including:
- Imaging tests, such as X-rays, CT (computed tomography) scans, magnetic resonance imaging (MRI) and ultrasound to determine the size and location of the teratoma.
- Blood tests to check hormone levels and tumor markers.
- Biopsy to find out if the teratoma is cancerous or noncancerous.
What is a retroperitoneal cyst?
Retroperitoneal cystic teratomas are cystic tumors composed of well-differentiated derivations from at least two of the three germ layers (ectoderm, mesoderm, endoderm). Most patients are female, and the tumor is commonly diagnosed in newborns, who are usually asymptomatic (,6).
What causes cystic teratoma?
What is the treatment of retroperitoneal cyst?
Treatment of choice is, complete excision with, if necessary, the resection of a portion of the adherent bowel. Marsupialization and partial excision of the cyst are less satisfactory procedures. Retroperitoneal cyst can be excised by using a transperitoneal flank approach.
What is the prognosis of neonatal teratoma with retroperitoneal cancer?
The prognosis of neonatal teratoma is favorable with an 80-100% survival reported after surgical excision of the tumor and treatment of any recurrence [5, 6]. In our case, the patient was a neonate and retroperitoneal teratoma is very unusual in this age group and at this site.
What is the typical site of teratoma?
The usual site for congenital teratoma is sacrococcygeal, the other sites being the mediastinum, head and neck, oropharynx, pericardium, and the retroperitoneum [1-3]. Retroperitoneal teratoma comprises 3.5-4% of all germ cell tumors in children and 1-11% of primary retroperitoneal neoplasms [4-6].
How common is teratoma in children?
Teratoma is the commonest congenital tumor. The usual site for congenital teratoma is sacrococcygeal, the other sites being the mediastinum, head and neck, oropharynx, pericardium, and the retroperitoneum [1-3]. Retroperitoneal teratoma comprises 3.5-4% of all germ cell tumors in children and 1-11% of primary retroperitoneal neoplasms [4-6].