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Eosinophilic Granuloma (Histiocytosis X): Treatment & Medication
Updated: Mar 3, 2008
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
- Multimedia
Treatment
Medical Care
Smoking cessation is the most important medical intervention. Smoking cessation often stabilizes the disease and sometimes leads to regression. It is also helpful in preventing bronchogenic carcinoma. Largely because of the rarity of PLCH, well-designed, prospective, randomized data regarding therapy are lacking. Treatment considerations are as follows:
- The use of corticosteroids is controversial. Corticosteroids may be considered in patients with a persistence of clinically significant pulmonary or constitutional symptoms or those with documented progression of disease. Corticosteroid therapy is not indicated in patients with normal lung function. Recommendations for the use of corticosteroids are based largely on retrospective data and expert opinion.
- Investigational therapies include interleukin-2 (IL-2) and anti–tumor necrosis factor-alpha (anti–TNF-alpha). Both agents have been reported to improve outcomes in pediatric disseminated histiocytosis. This finding may lead to the investigation of their use in adult PLCH.
- Useful adjunctive therapies include the following:
- Supplemental oxygen therapy for those with clinically significant hypoxemia (SaO2 <89% or PaO2 <55 mmHg) at rest or with exertion
- Aggressive treatment for pulmonary infections with prompt initiation of antibiotic therapy
- Bronchodilator therapy in the presence of an obstructive ventilatory defect
Surgical Care
Lung transplantation is an option for select patients with advanced disease. Recurrence of PLCH has been reported in the transplanted lung.7
Consultations
Refer patients with suspected PLCH to a pulmonary disease specialist.
Activity
Exercise and pulmonary rehabilitation are encouraged. These activities may improve the patient's functional status, even if they have no effect on disease progression.
Medication
The mainstays of treatment for PLCH are smoking cessation and supportive therapy. The use of corticosteroids in the treatment of PLCH is controversial. Their efficacy has not been proven in well-designed, prospective, randomized, controlled trials. Some experts recommend a trial of corticosteroids for those patients with persistent symptomatic disease or evidence of progression.
Corticosteroids
These agents have anti-inflammatory properties and cause profound and varied metabolic effects. Corticosteroids modify the body's immune response to diverse stimuli.
Prednisone (Deltasone, Meticorten, Orasone, Sterapred)
Used as immunosuppressant to treat autoimmune disorders. By reversing increased capillary permeability and suppressing activity of polymorphonuclear cells, may decrease inflammation. Oral corticosteroid with relatively limited mineralocorticoid activity. Best prescribed in consultation with pulmonary disease specialist.
Adult
0.5-1.0 mg/kg/d PO initially, followed by 6- to 12-mo taper
Pediatric
Not established
Coadministration with estrogens may decrease clearance; concurrent use with digoxin may cause digitalis toxicity secondary to hypokalemia; phenobarbital, phenytoin, and rifampin may increase metabolism of glucocorticoids (consider increasing maintenance dose); monitor for hypokalemia with coadministration of diuretics
Documented hypersensitivity; viral infection, peptic ulcer disease, hepatic dysfunction, connective-tissue infections, and fungal or tubercular skin infections; GI bleeding or ulceration
Pregnancy
B - Fetal risk not confirmed in studies in humans but has been shown in some studies in animals
Precautions
Abrupt discontinuation of glucocorticoids may cause adrenal crisis; hyperglycemia, edema, osteonecrosis, myopathy, peptic ulcer disease, hypokalemia, osteoporosis, euphoria, psychosis, myasthenia gravis, growth suppression, and infections may occur with glucocorticoid use
More on Eosinophilic Granuloma (Histiocytosis X) |
| Overview: Eosinophilic Granuloma (Histiocytosis X) |
| Differential Diagnoses & Workup: Eosinophilic Granuloma (Histiocytosis X) |
Treatment & Medication: Eosinophilic Granuloma (Histiocytosis X) |
| Follow-up: Eosinophilic Granuloma (Histiocytosis X) |
| Multimedia: Eosinophilic Granuloma (Histiocytosis X) |
| References |
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References
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Chaowalit N, Pellikka PA, Decker PA, Aubry MC, Krowka MJ, Ryu JH, et al. Echocardiographic and clinical characteristics of pulmonary hypertension complicating pulmonary Langerhans cell histiocytosis. Mayo Clin Proc. Oct 2004;79(10):1269-75. [Medline].
Crausman RS, Jennings CA, Tuder RM, Ackerson LM, Irvin CG, King TE Jr. Pulmonary histiocytosis X: pulmonary function and exercise pathophysiology. Am J Respir Crit Care Med. Jan 1996;153(1):426-35. [Medline].
Dacic S, Trusky C, Bakker A, Finkelstein SD, Yousem SA. Genotypic analysis of pulmonary Langerhans cell histiocytosis. Hum Pathol. Dec 2003;34(12):1345-9. [Medline].
King TE, Crausman RS. Pulmonary histiocytosis X. In: Fishman AP, ed. Fishman's Pulmonary Diseases and Disorders. Vol 1. 3rd ed. New York, NY: Mc-Graw Hill; 1998:1163-70.
Sundar KM, Gosselin MV, Chung HL, Cahill BC. Pulmonary Langerhans cell histiocytosis: emerging concepts in pathobiology, radiology, and clinical evolution of disease. Chest. May 2003;123(5):1673-83. [Medline].
Tazi A. Adult pulmonary Langerhans' cell histiocytosis. Eur Respir J. Jun 2006;27(6):1272-85. [Medline].
Vassallo R, Ryu JH. Pulmonary Langerhans' cell histiocytosis. Clin Chest Med. Sep 2004;25(3):561-71, vii. [Medline].
Keywords
eosinophilic granulomatosis, EG, pulmonary histiocytosis X, PHX, pulmonary Langerhans cell histiocytosis, PLCH, pulmonary histiocytosis, histiocytosis, cigarette smoking, end-stage fibrotic lung disease, fibrotic lung disease
Treatment & Medication: Eosinophilic Granuloma (Histiocytosis X)