From the Research
Based on the patient's last menstrual period (LMP) of February 16,2025, and her consultation date of February 27,2025, she is in the follicular phase of her ovarian cycle. Specifically, she is on day 11 of her cycle (counting from the first day of menstruation). During the follicular phase, which typically lasts from day 1 to day 13-14 of a 28-day cycle, the ovarian follicles are maturing under the influence of follicle-stimulating hormone (FSH) 1. This phase is characterized by increasing estrogen levels as the dominant follicle develops. The follicular phase precedes ovulation, which typically occurs around day 14 in a 28-day cycle. At day 11, the patient is likely approaching the late follicular phase, where estrogen levels are rising significantly, preparing the endometrium for potential implantation and triggering the LH surge that will lead to ovulation. It's worth noting that while this assessment is based on a typical 28-day cycle, individual cycle lengths can vary, which could affect the precise timing of the phases 2, 3. However, the most recent study on the topic, published in 2024, provides insight into physiological changes during the menstrual cycle, including the follicular phase 4. Additionally, a 2022 study highlights the impact of menstrual cycle phase on the detection of plasma cells and the diagnosis of chronic endometritis, further emphasizing the importance of considering the menstrual cycle phase in clinical assessments 5. Given the variability in cycle lengths and the potential for individual differences, it is essential to consider these factors when evaluating the patient's ovarian phase. Key points to consider include:
- The patient's age and potential for variability in cycle length
- The influence of FSH on follicular development
- The increasing estrogen levels during the follicular phase
- The potential for individual differences in cycle length and phase timing. Overall, the patient is likely in the late follicular phase, approaching ovulation, and clinical assessments should take into account the potential variability in cycle length and individual differences in menstrual cycle physiology.