Begin  The Authors

Tropical Diseases:

I Leishmaniasis
II Paracoccidioidomycosis
III Blastomycocis
IV Chromoblastomycosis
V Lepra
VI Sporotrichosis
VII Histoplasmosis
VIII Rhinosporidiosis
IX Mycetomas
X Rhinoscleroma
XI Chagasdisease
XII Actinomycosis
XIII Mucormycosis
XIV Amoebiasis
XV Protothecosis
XVI Lobomycosis
XVII Phaeohyphomycosis
XVIII Pruritus actinicus
XIX Bite of snake
XX Coccidioidomycosis

 List of cases


IV. Chromoblastomycosis

Case 35: Chromoblastomycosis / Contact dermatitis

Previus Case 34

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Next Case 36


Contact dermatitis

Click here to see the picture 35-A1

In a 28-year old cattle breeder from the State Apure / Venezuela developed in the course of two years a small ulcer on his left ear lobe, which is itching and had a thin crust. After the failing of several treatments the patient consulted a dermatologist. On his left cheek did grow, further, a fluctuating abscess.

Click here to see the picture 35-B1
Contact dermatitis

In a 20-year old farmhand a very painful inflammation began to appear on his left ear after painting a wooden fence with Karbolineum (a phenol product used to protect wooden fences). The surface of the reddened ear was smooth, but on the inside started to grow hemorrhagic, vesicle-like skin thickenings blocking the auditory canal.

Click here to see the picture 35-A2

In the histological slide of the biopsy taken from the left earlobe was found under the atrophic epidermis a microabscess containing several fungus cells with a thick brown capsule. This tumor with a proper colour belongs to the group of Dematiaceae. See also the fungi with yellow-brown hyphae in the phaeohyphomycosis.

Click here to see the picture 35-B2
Contact dermatitis

The biopsy taken from the ear showed several intraepidermal vesicles containing a serous liquid with the presence of several epithelial cells. The walls of the vesicles were formed by epithelial cells with haemorrhages.

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Facultad de Medicina
Universidad de Los Andes
Merida - Venezuela