Related Experiment Video
Updated: Jun 20, 2026
02:39
Is My Mouse Pregnant? High-Frequency Ultrasound Assessment
Published on: March 18, 2021
A pregnant pause
Emily S Birkholz1, Andrew G Lee, Jeffrey A Nerad
1Department of Ophthalmology and Visual Sciences, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA.
Survey of Ophthalmology
|September 29, 2009
Summary
Rapidly progressive optic neuropathy in a pregnant patient was caused by an orbital schwannoma. This rare orbital tumor should be considered in pregnant patients experiencing vision loss.
Area of Science:
- Neuro-ophthalmology
- Oncology
- Obstetrics
Background:
- Optic neuropathy presents a diagnostic challenge, particularly in pregnant patients.
- Neuro-ophthalmic conditions require careful evaluation due to potential risks to both mother and fetus.
Observation:
- A 23-year-old pregnant woman experienced rapidly progressive unilateral optic neuropathy.
- Standard diagnostic evaluations were complicated by the patient's pregnancy status.
Findings:
- An orbital apex lesion was identified as the cause of the visual impairment.
- The lesion was histopathologically confirmed to be an orbital schwannoma.
Implications:
- Orbital schwannomas can exhibit rapid growth, necessitating prompt diagnosis.
- This case highlights the importance of including orbital schwannomas in the differential diagnosis for pregnant patients with progressive visual loss.
Related Concept Videos
01:27Ovarian Cycle
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
01:18Menses Phase
The uterine cycle begins with the menstrual phase, which is considered day one of the cycle and typically lasts about five days. This phase is characterized by the degeneration and shedding of the stratum functionalis, the functional layer of the endometrium.
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
01:18Uterus and Cervix
The uterus, commonly called the womb, is a vital reproductive organ in females designed to provide a nurturing environment for the implantation and growth of an embryo. It is shaped like a hollow pear and positioned between the urinary bladder and the rectum. The uterus's structure allows it to support and protect a developing fetus throughout pregnancy.
The uterus is securely anchored within the pelvic cavity by paired broad ligaments on either side. It is further stabilized by three pairs of...
The uterus is securely anchored within the pelvic cavity by paired broad ligaments on either side. It is further stabilized by three pairs of...
01:38Fertilization
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
01:19Mitral Valve Prolapse III: Nursing Management
The nursing management of Mitral Valve Prolapse, or MVP, centers around patient education, symptom monitoring, and lifestyle modifications.Patient Education on MVP Diagnosis and Heredity: Nurses should provide comprehensive education about MVP, a condition where the mitral valve does not close appropriately during heartbeats. This education often includes the condition's pathophysiology, symptoms, and potential complications, like arrhythmias or mitral regurgitation. Though not fully...
01:19The Menstrual Cycle
The menstrual cycle is a recurrent sequence of changes in the uterine endometrium, specifically its functional layer, the stratum functionalis. This cycle prepares the uterus for potential pregnancy. This cycle typically spans 21–35 days, averaging 28 days, and aligns with the ovarian cycle, regulated by fluctuating levels of ovarian hormones, primarily estrogen and progesterone.
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a uterine...
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a uterine...