Erythema nodosum is seen in all of the following, EXCEPT:

Pregnancy, SLE and Tuberculosis are all associated with Erythema Nodosum. Erythema Nodosum are painfully red nodular lesions, occuring bilaterally on the shins. This lesion occur predominantly in woman in the fall and winter months. It is associated with SLE, Leprosy, TB, etc. Ref: Immunology, Immunopathology and Immunity, by Stewa Sell, Edward E. Max, Page 518; Chronic Pancreatitis, by Markus Buchler, Helmutt Friess, Page 29, 30, 37.