Pregnancy at 4 Weeks of Gestation, Lateral View (Brown Skin)

Description

A standing female torso is rendered semi-transparently in left lateral projection so the pelvic viscera read through the abdominal wall. The uterus sits in its normal anteverted, anteflexed position between the urinary bladder anteriorly and the rectum and sigmoid colon posteriorly, with the cervix projecting into the upper vagina and the fallopian tube and ovary visible on the exposed side. The uterine cavity is opened to show the early gestation at about week 4, when the conceptus is only a few millimetres across and implanted within the thickened endometrium; the uterine body itself is still close to its non-pregnant size and remains entirely within the bony pelvis. Loops of small intestine, the pelvic bone and the sacrum provide the surrounding spatial framework, while the subject's hands rest on the abdomen and hip. Week 4 corresponds to the period just after implantation, when hCG becomes detectable and pregnancy is usually first confirmed biochemically rather than on ultrasound. This lateral orientation is useful for explaining why a normal early intrauterine pregnancy is not yet palpable and why transvaginal rather than transabdominal imaging is preferred at this stage, and for locating the gestational sac relative to the cervix, bladder and rectouterine pouch. The same relationships underpin discussion of implantation site, early pregnancy bleeding and the differential with ectopic gestation in the tubal or ovarian region. The image suits obstetric and midwifery teaching sequences that follow a single subject week by week, embryology lecture slides, and antenatal patient education explaining what is happening in the first month. It also serves publishers producing pregnancy timelines, fertility clinic and app content, and journal or textbook figures requiring a consistent lateral reference of the gravid pelvis. Anatomical accuracy verified by SciePro's Medical Advisory Board.