Atypical cutaneous leishmaniasis in the immunosuppressed

Area of Science:

• Infectious Diseases
• Dermatology
• Parasitology

Background:

• Cutaneous leishmaniasis diagnosis can be challenging, particularly in immunocompromised patients.
• Standard diagnostic methods may yield false-negative results.
• Early and accurate diagnosis is crucial for effective treatment and preventing complications.

Observation:

• A 45-year-old woman on immunosuppressive therapy presented with a progressive, ulcerated skin lesion.
• Initial biopsies and serological tests for Leishmania were inconclusive.
• Polymerase chain reaction (PCR) on a subsequent biopsy confirmed Leishmania donovani infection.

Findings:

• PCR is a highly sensitive tool for diagnosing cutaneous leishmaniasis when traditional methods fail.
• The patient's immunosuppressed status may have contributed to diagnostic difficulties.
• Co-infection with bacteria necessitated broad-spectrum antibiotic coverage alongside antiparasitic treatment.

Implications:

• Highlights the importance of considering PCR in refractory or atypical cases of suspected cutaneous leishmaniasis.
• Emphasizes the need for tailored diagnostic and treatment strategies in immunocompromised individuals.
• Demonstrates successful management of a complex cutaneous leishmaniasis case with combined therapy.