What does uneven echo of ovarian teratoma mean? Magnetic resonance imaging (MRI) showed:
1, tumor, short T 1 signal intensity and long T2 signal in internal fluid fat part are the main basis for diagnosis of teratoma.
2. There are two main structures in the tumor: debris and mural process, and the components of mural process are lipid tissue, hair, teeth and bones. Debris is often located in the lower layer of the capsule, and liquid fat is located in the upper layer to produce stratification signal. The signal intensity of debris and wall protrusions is approximately moderate. On T2-weighted images, the lipid signal is very high, the hair signal is lower than the muscle signal, and there is no bone and tooth signal.
3. The chemical shift artifact caused by fat can appear in or around the tumor, and the variable phase is different from hemorrhagic diseases.
CT manifestations are:
1. Typical CT signs are cystic masses with uneven density, unilateral or bilateral.
2. The thickness of the capsule wall is uneven and the edge is smooth.
3. Bone and teeth with fat density shadow and hypoplasia can also be seen with solid nodular shadow protruding from the cyst wall. If there is both fat and liquid in the capsule, you can see the liquid-fat interface of the liquid under the upper fat, and the position can change with the change of body position.
4. Dermatoid cyst, CT only shows cystic space occupation with liquid, but the cyst wall may have eggshell calcification.
5. Malignant teratoma invades adjacent tissues, showing that the fat layer of tumor and surrounding organs disappears; When a tumor invades the bladder, pelvic muscles or intestine, the boundary between them is unclear.
Ultrasonic manifestations are:
1. Most mature teratomas have clear boundaries, complete capsules and smooth contours.
2. The oily substance in the tumor is a uniform, dense and tiny light spot, which partially or completely covers the capsule cavity.
3. When grease, viscosity and slurry are in the same cavity, one level of echo enhancement can be seen, which is called liquid grease surface.
4. When there is hair, spherical or hemispherical light mass can be seen, accompanied by sound shadow or sound attenuation. Luminous groups in liquid have a sense of floating.
5. The bones, teeth and cartilage are striped with strong echo, accompanied by sound shadow or sound attenuation.
6. The solid part was uneven and solid mass with moderate or strong echo.
What is the uneven echo of ovarian teratoma? Uneven echo is the term of color Doppler ultrasound. There is a small ectopic focus in the myometrium of patients with adenomyosis. Color Doppler ultrasound showed that the echo of uterine myometrium was uneven. In patients with pelvic tumors, ovarian teratomas, especially ovarian cancer, tumor markers are elevated, and the tumors are cystic-solid mixed echoes, which are also heterogeneous. At the same time, most patients may have ascites. Incomplete abortion, patients with intrauterine residue after drug abortion, patients with endometrial cancer and endometrial polyps, endometrial echo is also uneven.
Symptoms of ovarian teratoma:
1, irregular menstruation. Symptoms of ovarian teratoma may cause menstrual abnormalities, such as abnormal cycle, excessive or low volume.
2, found during cesarean section. Some obese or pregnant women are not easy to find teratomas during B-ultrasound. Therefore, some women found teratomas in the abdomen during cesarean section, and the doctor would remove the teratomas together.
I feel a lump myself. Some people's teratomas grow very big and get pregnant. Once you go to the hospital for examination, it may be a teratoma.
4, long-term infertility examination found. Some women have been infertile for many years after marriage, and they only know that they are teratomas after going to the hospital for examination. It may also be found in other operations or preoperative physical examination.
5. Other unexpected findings. For example, there was a traffic accident that caused abdominal pain. I went to the hospital for examination and found that it might be a torsion and rupture of teratoma.