Skin pathology of larva migrans

Introduction

Cutaneous larva migrans is a parasitic skin infection caused by helminth larvae that generally infest cats, dogs, and other animals. Humans can become infected with the larvae by walking barefoot along sandy beaches or by contacting soft, moist soil that has been contaminated with animal feces. Also known as creeping eruptionAs once infected, the larvae migrate below the surface of the skin and cause itchy red lines or tracks.

Histology cutaneous larva migrans

In larva migrans, histopathological examination shows curvilinear eosinophilic larvae inside epidermis (Figures 1,2, arrow). The larvae can be seen in the superficial epidermis (as illustrated in this case) or deeper on the surface dermis. There may be a inflammatory reaction rich in eosinophils.

Special studies for cutaneous migratory larvae.

None are generally needed. Consultation with colleagues in microbiology can be helpful in unusual cases.

Differential diagnosis for cutaneous larva migrans

Infestation With scabies, superficial fungal infections and deeper infestations can usually be easily distinguished on clinical grounds.