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  • Title: Fat necrosis with features of erythema nodosum in a patient with metastatic pancreatic carcinoma.
    Author: Durden FM, Variyam E, Chren MM.
    Journal: Int J Dermatol; 1996 Jan; 35(1):39-41. PubMed ID: 8838928.
    Abstract:
    A 59-year-old man presented with painful subcutaneous nodules on the anterior surfaces of the legs. He had received oral antibiotics and supportive care for presumed cellulitis and thrombophlebitis, but had minimal improvement. Five months earlier, he had undergone pancreaticoduodenectomy for acinar pancreatic carcinoma; at that time, the serum level of amylase had been normal, but the level of lipase was elevated. The patient denied fever, rigors, arthritis/arthralgia, or pleuritic pain. His medications included aspirin, furosemide, ranitidine, and nortriptyline. He denied any allergies. Physical examination revealed numerous firm, tender, erythematous and violaceous, subcutaneous nodules on the lower extremities, with marked bilateral pitting edema (Fig. 1). Skin biopsy of a representative lesion revealed septal panniculitis, consistent with erythema nodosum (Fig. 2). None of the characteristic changes of pancreatic fat necrosis was present. The patient was treated with aspirin, 650 mg orally, q 6 h, and indomethacin, 50 mg orally, q 12 h, but he continued to develop new nodules; prednisone, 60 mg orally was begun. Although he reported improvement in symptoms, the nodules failed to respond clinically and older nodules ulcerated along the medical aspect of the right leg (Fig. 3). The complete blood count was normal, except for hemoglobin, 10.9 mg per dL. Routine serum biochemical studies were also normal, except for albumin, 3.1 mg per dL, LDH, 312 U per L, and SGOT, 51 U per L. Serum amylase was 14 U per L (normal per 30 to 115 U per L) and serum lipase was 54,160 U per L (normal 0 to 200 U per L). Chest roentgenogram and tuberculin skin test were negative. A CT scan of the abdomen revealed extensive liver metastases. A second biopsy of the skin and subcutis of a necrotic nodule revealed lobular panniculitis with the characteristic picture seen in pancreatic fat necrosis (Fig. 4). The patient was presumed to have metastatic pancreatic carcinoma and pancreatic fat necrosis. Nodules subsequently developed on the thighs, arms, hands, wrists, and fingers. He developed arthritis and arthralgias of the ankles, wrists, and hands, bilaterally, and the right knee. Aspiration of a right knee effusion revealed numerous neutrophils, but no evidence of infection. Treatment was begun with the somatostatin analog, octreotide, in increasing doses. During this therapy, the lesions did not progress and new lesions did not appear. There was no change in the lipase level. Inadvertently, octreotide was omitted at discharge, but reintroduction of octreotide was associated with lack of further progression of the nodules, according to the patient's spouse; however the patient became progressively debilitated and his abdominal pain worsened, requiring continuous sedation. His condition deteriorated and he died several weeks after hospital discharge.
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