Molar pregnancy is a rare type of pregnancy in which a non-viable fertilized egg develops into a tumor. The spelling of "molar" in this context can be explained using the International Phonetic Alphabet (IPA) transcription: /ˈmoʊlər pɹɛɡnənsi/. The first syllable "mo" is pronounced with a long "o" sound, followed by a schwa sound in the second syllable "-lar." The stress is on the second syllable. The word "pregnancy" is spelled phonetically as /ˈpɹɛɡnənsi/.
A molar pregnancy, also known as hydatidiform mole, is a rare abnormality that occurs during pregnancy. It is characterized by the development of an abnormal growth of placental tissue inside the uterus, instead of a normal fetus. This condition arises from an abnormal fertilization of the egg, resulting in the formation of a nonviable pregnancy.
In a molar pregnancy, the placenta develops into an abnormal mass called a mole, which may take the form of a cluster of grape-like structures. These mole formations can grow rapidly and fill the uterus, causing it to expand at an accelerated pace compared to a normal pregnancy. However, the development of an embryo is absent or severely impaired in most cases.
The symptoms of molar pregnancy can include vaginal bleeding during early pregnancy, severe nausea and vomiting, enlarged uterus size, and high blood pressure. In some instances, the mole can progress to cancer, known as gestational trophoblastic disease.
Diagnosis of molar pregnancy is typically made through ultrasound imaging, which can identify the presence of the abnormal growth. Treatment usually involves surgically removing the mole from the uterus through a procedure known as dilation and curettage. After the procedure, close monitoring of the patient's follow-up hCG hormone levels and regular check-ups are necessary to ensure complete removal of the mole and to detect any potential cancerous growth.
P. marked by the degeneration of the fetus into a mole.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "molar" in the term "molar pregnancy" is derived from the Latin word "mola", which means "millstone" or "grindstone". This term was chosen to describe the condition due to the appearance and characteristics of the abnormal growth during a molar pregnancy. The uterus can fill with cystic vesicles that resemble a mass of grape-like structures, which were thought to resemble the rough surface of a millstone. Therefore, "molar pregnancy" refers to the abnormal growth or development of trophoblastic tissue in the uterus, which resembles a mass of grapes or a mole-like growth.