Ptosis and Rotation

Ptotic descent of the kidney is frequently accompanied by rotation about its vertical axis. The condition is more common on the right where its effects on the bowel

Ptotic Kidney

Fig. 9—21. Displacement of the left colon by left renal cyst.

(a and b) The anatomic splenic flexure (SF) is maintained, but there is lateral and anterior displacement of the descending limb of the distal transverse colon (arrows). The mass enlargement of the lower pole of the kidney is identifiable (large arrows). (Reproduced from Meyers.2)

Fig. 9—21. Displacement of the left colon by left renal cyst.

(a and b) The anatomic splenic flexure (SF) is maintained, but there is lateral and anterior displacement of the descending limb of the distal transverse colon (arrows). The mass enlargement of the lower pole of the kidney is identifiable (large arrows). (Reproduced from Meyers.2)

may be misleading unless the anatomic relationships are recognized.2 The distal descending duodenum may be displaced medially and anteriorly in a manner indistinguishable from a true renal mass (Fig. 9-27). The ptotic kidney may further descend fully to the inframesocolic right lower quadrant so that with rotation it displaces primarily small bowel loops (Fig. 9-28).

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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