Male Hypochondriac Region, Gross Anatomy

Description

Positioned on the upper lateral abdominal wall, the right and left hypochondriac regions are outlined immediately inferior to the costal margins and lateral to the epigastric region, their inferior boundary typically referenced to the subcostal plane. Each hypochondrium lies superior to the right and left lumbar (flank) regions, with the midclavicular lines providing the medial limits that separate them from the central upper abdomen. Surface landmarks likely include the lower ribs (commonly ribs 7 to 12), the costal arch, and the lateral abdominal wall contour as it transitions posteriorly toward the flank. Clear surface delineation of the hypochondriac region matters because pain localization here often drives the first pass of clinical reasoning and imaging. Right hypochondriac tenderness classically raises concern for gallbladder disease (including acute cholecystitis with a positive Murphy sign) and directs focused right upper quadrant ultrasound beneath the costal margin; left-sided symptoms may steer attention toward the spleen, including traumatic splenic injury with referred pain to the left shoulder (Kehr sign). Subcostal anatomy also constrains procedural access. Rib shadowing and intercostal spaces influence where you can safely place an ultrasound probe or plan an incision. Use this artwork for anatomy and physical diagnosis teaching on abdominal regions and planes, for surgical or emergency medicine publications illustrating right upper quadrant evaluation, and for patient-facing materials that need accurate surface mapping without internal organ exposure. Anatomical accuracy verified by SciePro's Medical Advisory Board.