Resident Rounds. Part III: Neutrophilic Eccrine Hidradenitis in the Setting of Acute Myelogenous Leukemia Treated With Cytarabine
February 2013 | Volume 12 | Issue 2 | Feature | 231 | Copyright © 2013
Darya Shlapak MBA, Kathyrn Kerisit MD, Christine Lin MD, Alun Wang MD PhD, and Brittany Stumpf MD
Department of Dermatology, Tulane University School of Medicine, New Orleans, LA
No abstract available
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A 46-year-old white female with a recent diagnosis of acute myelogenous leukemia (AML) presented with a sudden onset of erythematous, edematous, tender papules and plaques scattered over the face, chest, and bilateral axillae. She was admitted for induction chemotherapy with cytarabine and daunorubicin 2 weeks before consultation. Ten days after the initiation of chemotherapy, she became febrile and was placed on cefepime for neutropenic fever. She noticed the eruption 4 days after initiation of an antibiotic regimen. The rash was initially confined to her face but rapidly spread to her chest and axillae (Figure 1). She denied arthralgia, myalgia, cough, pleurisy, dysuria, ocular symptoms, or oral ulcerations. White blood cell count was 0.5 × 103/µL.
Histologic examination revealed neutrophilic infiltrate of the eccrine coils with extension up the proximal portion of the eccrine ducts. There was prominent interstitial hemorrhage and mild superficial perivascular lymphocytic infiltrate. The overlying epidermis was acanthotic with mild keratinocytic atypia, most likely secondary to the patient’s recent chemotherapy (Figure 2).
Based on the above findings, the patient was diagnosed with neutrophilic eccrine hidradenitis (NEH). The lesions resolved after a few days of topical treatment with triamcinolone 0.1% ointment.
NEH is a distinctive neutrophilic dermatosis, associated with malignancy in 90% of the cases. Even though it can occur in the setting of both hematologic and solid malignancies, it is most commonly reported in patients with AML who are undergoing chemotherapy with cytarabine. Our case report reinforces this link. NEH has also been described in the setting of viral and bacterial infections, as well as Behçet’s syndrome. Cases without identifiable cause and pediatric cases have been reported.1-9
NEH usually presents with febrile neutropenia and manifests as tender erythematous papules, plaques, or pustules. Sites of predilection are head and neck, especially in chemotherapy-associated NEH, but a more generalized distribution, including trunk, acral, intertriginous, and extensor surfaces can also occur.