Do teratomas require a special diet?

Written by Wang Jing Hua
Obstetrics and Gynecology
Updated on April 15, 2025
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The physical examination revealed a teratoma issue, which is generally related to congenital factors and has no relation to our regular diet. However, once a teratoma is found, it is essential to avoid eating cold and raw foods, as cold stimuli can also cause smooth muscle spasms, leading to discomfort in the abdomen. Regarding teratomas, the main consideration is the specific size of the tumor and the series conditions of the tumor. Some teratomas may undergo torsion, and others may become overly large or malignant, necessitating timely surgical intervention.

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Symptoms of teratoma malignancy

Mature teratomas of the ovary belong to a benign lesion; however, if a malignant transformation occurs, its growth rate will increase. As the tumor volume enlarges, it can cause women to experience heaviness and even pain on one side of the lower abdomen, and some women may also experience symptoms of lumbar discomfort. When its volume enlarges and compresses ovarian tissue, it can affect the function of the ovaries, leading to menstrual irregularities, anovulation, and difficulties in conception. Some women may experience the torsion of the teratoma pedicle, inducing acute abdominal pain, especially after sudden changes in body position or urination. Furthermore, when the teratoma undergoes malignant changes and becomes significantly large, it can also compress surrounding organs causing corresponding symptoms. For instance, compression towards the front can affect the bladder, causing frequent urination, whereas compression towards the back can impede bowel movement in the rectum. Sometimes, it can also compress nerves in the pelvic wall, causing pelvic pain.

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Is ovarian teratoma cancer?

Ovarian teratomas are divided into benign and malignant types. If the teratoma is malignant, then it is a type of cancer. If it is benign, it is not cancer; it is just a tumor. The malignancy of a tumor is not as high as that of cancer. Therefore, it is necessary to determine its pathological type. After removing the teratoma, it should be sent to the pathology department for examination to clearly determine whether it is benign or malignant. For benign teratomas, postoperative follow-up observation is sufficient. However, if the teratoma is malignant, the scope of the surgery should be conducted according to the protocols for ovarian cancer, and chemotherapy is required after surgery.

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Written by Yan Qiao
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How large must an ovarian teratoma be to require surgery?

Ovarian teratomas, if detected by ultrasound, are indicative of surgery regardless of the size of the tumor. However, it is essential to locate the lesion accurately to proceed with the surgery. For teratomas smaller than two centimeters, it can be quite challenging to find the lesion, which might lead to surgical failure. Additionally, this can increase the trauma for the patient and the costs of surgery. Thus, it is generally advised to perform surgery on teratomas that are larger than two centimeters to ensure a more reliable outcome. In cases where patients have other diseases in conjunction with a teratoma, it is also feasible to consider removing the teratoma during surgery for the other conditions, always attempting to thoroughly explore and locate the teratoma regardless of its size.

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Written by Li Shun Hua
Obstetrics and Gynecology
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Will a teratoma regrow if it is removed?

After surgery for ovarian teratoma, whether it can regrow is uncertain, because ovarian tissue can potentially develop such tumors. Ovarian teratomas can be benign or malignant. The recurrence rate of benign teratomas is very low after surgery, but there is still a possibility of regrowth. However, for malignant teratomas, also known as immature teratomas, surgery involves removing the affected ovary. The opposite ovary can be preserved if it is normal, depending on the patient's age, but regular follow-ups are necessary. If the patient is older, an extensive surgery for teratoma, which includes the removal of both the uterus and ovaries, might be required.

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What's the matter with ovarian teratoma pain?

The causes of lower abdominal pain in women with ovarian teratomas are complex. Firstly, as the teratoma grows in size, it can, due to gravity, pull on surrounding ligaments, causing pain on one side of the lower abdomen. When the teratoma is particularly large, it can also compress nerves in the pelvis, leading to neuropathic pain. Moreover, teratomas are heterogeneously textured. If they are quite mobile and not adhering to surrounding tissues, sudden changes in body position, or an increase in uterine size during the mid-pregnancy, might shift the position of the teratoma. This can lead to torsion of the stalk, causing local ischemia and hypoxia, and resulting in acute lower abdominal pain.