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World Journal of Oncology

Case Report

Volume 2, Number 3, June 2011, pages 133-137

Hemophagocytic Lymphohistiocytosis in Association With Clostridium difficile Infection and Cutaneous T-Cell Lymphoma

Hemophagocytic lymphohistiocytosis (HLH), also known as Macrophage Activation Syndrome (MAS) is potentially a life threatening disorder [1-3]. HLH clinically presents with fever, hepatosplenomegaly, suppressed blood cell counts, altered coagulation cascade and multi-organ dysfunction [2]. This syndrome has been reported frequently in infants and children compared to adults [4-6]. Infectious agents, autoimmune disorders and malignancies have been associated with HLH in adults [7, 8] whereas genetic mutations play a major role in infants and children [9-12]. Cutaneous T-cell lymphomas in the setting of latent Epstein-Barr virus (EBV) infection have been reported in the literature [13, 14]. However to the best of our knowledge natural killer T (NKT) cell lymphoma in presence of latent EBV and active Clostridium difficile infection, progressing to HLH has never been reported. We present a case of HLH in a patient with EBV positive NKT cell cutaneous lymphoma admitted with Clostridium difficile associated diarrhea.

A 35-year-old Hispanic male presented to the emergency room with severe right sided abdominal pain of one week duration. The pain was 10/10 in intensity, non-radiating and associated with loss of appetite, nausea, vomiting and two to three episodes of watery diarrhea per day. There was no mucus or blood in stool. He also had subjective fever and denied any contact with sick people or recent travel. He denied any other medical problems. He had Bell’s palsy one month back which was treated with Valacyclovir and Prednisone. He had skin rash of three months duration associated with itching for which he underwent skin biopsy one week prior to admission at a different hospital. The biopsy was reported as EBV positive NKT cell cutaneous lymphoma (Fig. 1, 2). On further work up by his dermatologist his routine labs were within normal limits. He was also tested negative for Human Immunodeficiency Virus (HIV), Human T cell Lymphoma Virus (HTLV) I and HTLV II.

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Figure 1. The skin biopsy revealed EBV positive NKT cell cutaneous lymphoma.

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Figure 2. The skin biopsy revealed EBV positive NKT cell cutaneous lymphoma.

Review of other systems was non-contributory. He denied any family history of malignancies. He was an immigrant from Dominican Republic. He was an active smoker and drank alcohol occasionally but denied recreational substance use.

He was afebrile and hemo-dynamically stable on presentation. Physical examination revealed diffuse erythematous violaceous rash on back, chest, abdomen, neck, and extremities (Fig. 3). An ulcerated crusted plaque of 8 cm covered by eschar was noted on right arm (Fig. 4). Abdomen was tender on right upper and lower quadrants with normoactive bowel sounds. Laboratory results showed white cell count of 4600/microliter, platelet count of 158,000/microliter. His basic metabolic panel, liver function tests, amylase and lipase levels were within normal limits. Computer Tomography (CT) of the abdomen showed benign angiomyolipoma of right adrenal gland and bilateral inguinal lymphadenopathy.

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Figure 3. Diffuse erythematous violaceous rashes were presented on back, chest, abdomen, neck, and extremities.

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Figure 4. An ulcerated crusted plaque of 8 cm covered by eschar was noted on right arm.

He was admitted and treated with intravenous (IV) fluids, metoclopramide and analgesics. On the second day of hospital course he had fever, so blood, urine and stool cultures were sent as a part of septic work up. His stool specimen was reported positive for Clostridium difficile toxin. He was treated with Vancomycin, Piperacillin + tazobactam and Metronidazole. He underwent esophagogastroduodenoscopy (EGD) due to intractable vomiting which showed hiatal hernia, and biopsy revealed minimally active gastritis, with negative test for Helicobacter pylori.

He has been febrile throughout his hospital course, and his liver enzyme levels were found to be elevated on 8th hospital day along with leucopenia and thrombocytopenia. His hepatitis viral titers were negative and there was no evidence of cholelithiasis on ultrasonogram. He underwent trans-thoracic echocardiogram and no vegetations were detected. His fever persisted for next several days and his blood cultures were negative repeatedly. He underwent biopsy of the left inguinal lymph node and pathology report was awaited. On 20th day of hospital course he was delirious and hypotensive with respiratory distress. He was intubated, started on vasopressors, Imipenem, Fluconazole, and Vancomycin; and transferred to critical care unit immediately. He did not improve and died on 22nd day of hospitalization.

His blood cultures from 20th day were growing Enterococcus fecalis and Klebsiella pneumoniae sensitive to Vancomycin and Imepenem respectively. Lymph node biopsy result was pending and autopsy was requested. Autopsy results revealed EBV positive cutaneous NKT cell lymphoma and secondary hemophagocytic lymphohistiocytosis in bone marrow, liver and spleen (Fig. 5).

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Figure 5. Autopsy results revealed hemophagocytic lymphohistiocytosis in bone marrow, liver and spleen.

Hemophagocytic lymphohistiocytosis is an inflammatory disorder [6] reported frequently in children [3, 5, 15, 16]. Familial HLH has higher prevalence in infants and children where genetic mutations play a role in the pathogenesis [6, 10-12, 17, 18]. Secondary HLH is seen in adults more frequently where autoimmune disorders [1, 8], malignancies [4, 19, 20], infectious agents including bacteria [21, 22], viruses [23, 24], and immunosuppression [7] are involved in the pathogenesis. Macrophage activation syndrome (MAS) is a variant of HLH especially when it occurs in association with autoimmune disorders [1, 2]. Clinical presentation may include fever, jaundice, hepatosplenomegaly, suppressed blood cell counts, altered coagulation profile and multi organ dysfunction [14] leading to death. Laboratory findings may include pancytopenia, abnormal liver function tests and altered coagulation profile [6, 14]. Some patients may have abnormal natural killer (NK) cell assay, elevated levels of ferritin and triglycerides [6, 17, 24, 25].

HLH has poor prognosis especially when it occurs in the presence of EBV infection and cutaneous NKT cell lymphomas [13, 14, 19, 23, 26, 27]. This case explains the complexity and poor prognosis associated with HLH. In this context patient had recently diagnosed EBV positive NKT cell lymphoma and was admitted with Clostridium difficile associated diarrhea. However there was no evidence of antibiotic usage prior to the presentation. Hence Clostridium difficile associated diarrhea in this case might be a community acquired infection [28]. Succeeding hepatic failure, pancytopenia, and post-mortem findings further confirm the diagnosis of HLH. We can argue that bacterial sepsis is a precipitating event of HLH, but initial negative blood cultures may support sepsis as a terminal event rather than precipitating event.

This patient had classic symptom and signs of HLH which include persistent fever, lymphadenopathy, elevated liver enzymes and multi-organ failure in the presence of active malignancy. However HLH precipitated in EBV positive NKT cell lymphoma patient by Clostridium difficile associated diarrhea is unique to this patient and has never been reported in the past. This case warrants us to consider HLH as a differential diagnosis whenever patients with active malignancy and metabolic stress like infection, present with clinical and laboratory findings suggestive of HLH. Since diagnosing at earlier stage may be helpful as present treatment regimens are proven to be having survival benefits [3, 29] physicians should be aware of early detection and appropriate management of HLH.

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