Important: This page is general information, not medical advice. It does not recommend or prescribe any treatment. Always consult your doctor or pharmacist before starting, stopping or changing any medicine.
About Tumors and Pregnancy
Tumors during pregnancy are rare, but they can happen. Tumors can be either benign (not cancer) or malignant (cancer). The most common cancers in pregnancy include breast cancer, thyroid cancer, cervical cancer, lymphoma, and melanoma. Cancer itself rarely harms the fetus, and some cancer treatments are safe during pregnancy. You and your health care provider will work together to find the best treatment. Your choices will depend on how far along the pregnancy is, as well as the type, size, and stage of your cancer.
Another type of tumor that women can get is called a gestational trophoblastic disease (GTD). It happens when a fertilized egg doesn't become a fetus. GTD is not always easy to find. It is usually benign, but some types can be malignant. The most common type of GTD is a molar pregnancy. In its early stages, it may look like a normal pregnancy. You should see your provider if you have vaginal bleeding (not menstrual bleeding).
Treatment depends on the type of tumor, whether it has spread to other places, and your overall health.
It sits within Cancers and Pregnancy and Reproduction.
The lead U.S. institute for this subject is the National Cancer Institute.
When to speak to someone. Reading about a topic cannot tell you whether it applies to you. Speak to a doctor or pharmacist if symptoms are severe, sudden, getting worse, or simply not going away — and seek emergency care immediately for chest pain, breathing difficulty, sudden weakness or confusion, or a serious allergic reaction.
Research on Tumors and Pregnancy
12,429 studies areregistered for this condition on ClinicalTrials.gov, the U.S. National Library of Medicine's public registry. A selection is below — the links go straight to the registry entry, not to a summary of ours.
What a registered study does and does not mean. Registration means a study exists and has been declared publicly. It says nothing about whether the treatment being tested works, is safe, or is available to you. Many studies find no benefit — that is what research is for. Never seek out an experimental treatment on the strength of a registry entry alone.
Research currently under way
- Testing the Addition of Herceptin Hylecta or Phesgo to the Usual Chemotherapy for HER2 Positive Endometrial Serous Carcinoma or CarcinosarcomaNational Cancer Institute (NCI)
- Targeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)National Cancer Institute (NCI)
- A Trial of Robotic Versus Open Hysterectomy Surgery in Cervix CancerGOG Foundation
- Evaluation of Serum Preptin Levels in Patients With Polycystic Ovary SyndromeGÜLDEN ANATACA
- Comprehensive Evaluation of Tumor Oxygenation, Metabolism and Blood Supply of High Grade Glioma and Cervical Cancers Using Dynamic FAZA PET and Multiparametric MRM.D. Anderson Cancer Center
- Microfluidic Urinary Exosome-Based Diagnostic Model for Bladder CancerCancer Institute and Hospital, Chinese Academy of Medical Sciences
Research already completed
- A Phase II, Single-Arm Study of RAD001 (Everolimus), Letrozole, and Metformin in Patients With Advanced or Recurrent Endometrial CarcinomaM.D. Anderson Cancer Center
- Gemcitabine, Carboplatin, and Lenalidomide for Treatment of Advanced/Metastatic Urothelial Cancer and Other Solid TumorsNational Cancer Institute (NCI)
Study data from ClinicalTrials.gov, a service of the U.S. National Library of Medicine. Retrieved 2026-07-30. Registry entries are supplied by study sponsors and investigators; ClinicalTrials.gov does not verify their scientific validity. PocketsInfo is not affiliated with, and not endorsed by, the NLM or the NIH.
Where to read more
Rather than paraphrase, we point you to the primary sources. Every link below is to a government health agency, a national institute or a recognised medical body — grouped by what you are trying to find out.
Start Here
- Cancer during PregnancyAmerican Cancer Society
Treatments and Therapies
- Cervical Cancer Treatment during PregnancyNational Cancer Institute
- Drugs Approved for Gestational Trophoblastic DiseaseNational Cancer Institute
- Gestational Trophoblastic Disease TreatmentNational Cancer Institute
- Treating Breast Cancer during PregnancyAmerican Cancer Society
- Treatment of Hodgkin Lymphoma during PregnancyNational Cancer Institute
Related Issues
- Diethylstilbestrol (DES) Exposure and CancerNational Cancer Institute
Clinical Trials
- ClinicalTrials.gov: Cancer and PregnancyNational Institutes of Health
- ClinicalTrials.gov: Gestational Trophoblastic DiseaseNational Institutes of Health
- ClinicalTrials.gov: Hydatidiform MoleNational Institutes of Health
- ClinicalTrials.gov: Pregnancy Complications, NeoplasticNational Institutes of Health
Medical subject headings
Clinicians and researchers index this subject under Pregnancy Complications, Neoplastic, Pregnancy Complications, Neoplasms, Pregnancy. These are the terms to use when searching medical literature.
This page is built from the MedlinePlus health topic record for Tumors and Pregnancy, a service of the U.S. National Library of Medicine (NLM), National Institutes of Health. Information is from MedlinePlus.gov. PocketsInfo is not affiliated with, and is not endorsed by, the NLM or the NIH. Retrieved 30 July 2026.