One hundred consecutive splenectomies for trauma: is histologic evaluation really necessary?

Splenectomy remains the most commonly performed abdominal operation for trauma. Although the vast majority of these patients (pts) are young and healthy, histologic evaluation is still routinely performed. We propose that routine histologic sampling of an injured yet otherwise grossly normal spleen is unnecessary. A retrospective review of 100 consecutive pathologic specimens of pts undergoing splenectomy for trauma at a Level I trauma center was performed during a 25-month period. Data are reported as mean +/- SD. Average age was 34.4 +/- 15.1 years. There were 78 men and 22 women. Average injury severity score was 28.3 +/- 12.9. The most common mechanisms of injury were motor vehicle collisions (56%) and motorcycle collisions (15%). Average length of stay was 17.4 +/- 19 days. Microscopic pathologic findings returned as benign with no evidence for neoplasia in 99 of 100 specimens. Mean specimen weight was 184.6 +/- 188.7 g. Only one spleen, which appeared grossly abnormal and weighed 1,800 g, had abnormal histology demonstrating extramedullary hematopoiesis. This pt died before further workup. Our review suggests that the routine microscopic evaluation of spleens removed after traumatic injury, as is currently the standard of care at our institution, is unnecessary. Such examination should only be performed in cases of marked splenomegaly or in spleens that appear grossly abnormal.