Anatomical Orientation of the Superior Border of the Spleen from a Medial Direction

Description

Seen from the medial aspect, the spleen’s superior border forms a thin, sharp margin beneath the diaphragmatic dome, continuous with the fibrous capsule that invests the organ. Along this edge, the diaphragmatic (parietal) surface lies superior and lateral, while the visceral surface turns inferomedially toward the gastric impression and adjacent peritoneal reflections. Subtle notching along the superior border may be indicated as a surface landmark near the anterior pole. A crisp contour. Orientation of the superior border matters because it is the palpation and imaging landmark used to judge splenic enlargement, and its sharpness helps differentiate normal spleen from a rounded, congested margin seen in portal hypertension, hematologic malignancy, or acute infection. Medial viewing also supports teaching of how the capsule and peritoneum relate to the visceral surface, clarifying why subcapsular hematoma and splenic laceration can track along the capsule and present with left upper quadrant pain or Kehr sign. This angle also frames where the hilum sits relative to the medial surface, a key reference when correlating with CT anatomy during trauma workup. Use this plate in gross anatomy labs and abdominal anatomy lectures when you need a clean description of the spleen’s borders and surfaces without distraction from surrounding organs. It also fits operative notes and educational figures for splenectomy planning or trauma surgery texts, where readers want consistent terminology for the superior border, capsule, and medial relationships. Anatomical accuracy verified by SciePro's Medical Advisory Board.