Esophageal candidiasis overview

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Ahmed Younes M.B.B.CH [2]

Overview

Esophageal candidiasis is an opportunistic infection of the esophagus by Candida albicans. The disease occurs in patients in immunocompromised states, including post-chemotherapy and in AIDS. It is also known as candidal esophagitis or monilial esophagitis

Historical Perspective

In 1839, B. Lagenbeck from Germany described a yeast-like fungus for the first time in the human oral infection thrush and its ability to cause it.

Pathophysiology

Candida is a normal commensal of the skin and mucous membranes. The balance between the virulence of the fungus and the host immune defense is responsible avoiding opportunistic infection of candida. Deficiency of cell-mediated immunity or poor general status are the main risk factors for having opportunistic candidiasis. Candidiasis is usually localized to skin and mucous membranes. In rare cases, candidiasis can spread causing candidemia and distant infection. These cases are usually associated with deficient immunity . C. albicans is the main species causing infection in humans more than any other candida species.

Causes

C. albicans is the main species causing infection in humans more than any other candida species.

Differentiating esophageal candidiasis from other diseases

Esophageal candidiasis should be differentiated from other diseases causing dysphagia especially in immunocompromised patients.

Classification

Epidemiology and Demographics

Candidiasis is the most common cause of infectious esophagitis followed by HSV esophagitis.

Risk Factors

Immunodeficiency is the most important risk factor for candida esophagitis.

Screening

Natural History, Complications and Prognosis

Candida esophagitis is very responsive to antifungal therapy. Complications can be systemic due to the spread of infection to the blood stream or local as esophageal stricture and obstruction.

Symptoms and Physical Examination

The underlying predisposing factors are usually clear on obtaining history (HIV, chemotherapy, etc ..). Odynophagia is the most common encountered symptom of esophageal candidiasis. Examination reveals signs of immunocompromisation that was the primary cause of developing esophageal thrush.

Diagnostic tests

Although the appearance of the patches during endoscopy is diagnostic for esophageal candidiasis, biopsies should be obtained to confirm the diagnosis. If patient is not already diagnosed with HIV or another immunocompromising disease, screening should be done.

Treatment

Primary Prevention

References