RT Journal A1 LIPSHUTZ B, NAIDE M T1 CLinical significance of calorimetric changes in the lower extremity JF Archives of Surgery JO Archives of Surgery YR 1939 FD March 1 VO 38 IS 3 SP 412 OP 416 DO 10.1001/archsurg.1939.01200090017002 UL http://dx.doi.org/10.1001/archsurg.1939.01200090017002 AB Hesse1 in 1929 directed attention to the occurrence of calorimetric changes in the skin of the lower extremity, resulting from irritation or pressure on the lumbar portion of the ganglionated cord and its connecting rami. Pressure or irritation affecting the lumbar portion of the ganglionated cord, whether it is of inflammatory or of neoplastic origin, may produce well defined changes in temperature of the skin of the corresponding lower extremity.2The changes in temperature vary with the degree and type of pressure on the ganglionated cord. Mild pressure or irritation results in the appearance of increased vasoconstrictor phenomena in the corresponding lower extremity. Comparative estimations of the temperature of the skin of the lower extremity will disclose in such instances a decrease in temperature on the side on which retroperitoneal pressure is present. The increased vasoconstriction results in lessened blood volume and thus in lowering of the cutaneous