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I MAGES IN T ROPICAL D ERMATOLOGY

Jorge Lobo’s disease*

Kalline Andrade de Carvalho

1

Marcos César Floriano

1

Milvia Maria Simões e Silva Enokihara

1

Marta Regina Machado Mascarenhas

1

DOI: http://dx.doi.org/10.1590/abd1806-4841.20153603

Abstract: Jorge Lobo’s Disease is a rare, chronic granulomatous cutaneous mycosis, which is typical of tropical and subtropical regions. It is caused by the traumatic implantation of the fungus Lacazia loboi into the skin and subcutaneous tissue. The disease was fi rst described in 1931 by Jorge Lobo, in Recife (PE), Brazil. It is common in Central and South America, and predominates in the Amazon region. We report a case of Jorge Lobo’s Disease, which had been initially referred as being paracoccidioidomycosis. We emphasize clinical and diagnostic features of the disease.

Keywords: Blastomycosis; Lacazia; Lobomycosis

Received on 16.10.2013.

Approved by the Advisory Board and accepted for publication on 25.06.2014.

* Study conducted at the Department of Dermatology, Universidade Federal de São Paulo (Unifesp) – São Paulo (SP), Brazil.

Financial Support: None.

Confl ict of Interest: None.

1 Universidade Federal de São Paulo (Unifesp) – São Paulo (SP), Brazil.

©2015 by Anais Brasileiros de Dermatologia 586

An Bras Dermatol. 2015;90(4):586-8.

A 47-year-old male patient, who had been living in Macapa (AP) for 10 years presented with a lesion of four years’ duration in the right malar region. Physical examination revealed a keloidiform node (Figure 1). Histopathological examination evidenced a granulomatous infl ammation with fungal proliferation in the dermis, which was suggestive of Lacazia loboi compatible with Jorge Lobo’s disease (Figures 2, 3 and 4).

Jorge Lobo’s Disease is a rare, chronic granulomatous cutaneous infection caused by the traumatic implantation of the fungus Lacazia loboi into the skin and subcutaneous tissue. The disease was fi rst described in 1931 by the dermatologist Jorge Lobo, in Recife (PE), Brazil.1 It is common in Central and South America, and predominates in the Amazon region.2,3 There are about 550 cases reported in the literature. Of these, 322 occurred in Brazil.About 90% of cases have occurred in forest workers.4,5

FIGURE 1:

Keloidiform nodes in the malar region of the patient’s face

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Jorge Lobo’s Disease 587

An Bras Dermatol. 2015;90(4):586-8.

Clinically, it is characterized by a large polymorphism of cutaneous lesions. Keloidiform nodes usually predominate. It primarily affects exposed areas of the skin, tending to spare mucous membranes. Local symptoms are bloating, itching and pain on palpation. It may affect the lymph nodes, but not internal organs.6,7

The diagnosis is made based on anatomicopathological evidence and presence of the fungus in the skin lesion; culture is negative.

Pathology shows nodular and diffuse granulomatous infl ammatory infi ltrate in the dermis, consisting of macrophages and numerous multinucleated

FIGURE 2: Presence of granulomatous infl ammation with intense and diffuse proliferation of fungi in the

papillary dermis and superfi cial reticular dermis, engulfed or not by histiocytes, suggesting Jorge Lobo’s

disease - HE 100x

FIGURE 3: Fungi and granulomatous infi ltrate in detail - HE 400x

FIGURE 4: Grocott’s method to show the distribution of fungi in the dermis - 400x

Langerhans’-type cells and foreign body cells fi lled wih fungi. Fungus examination shows globoid structures with thick, double-contour walls, which reproduce by simple budding. They are usually rosary-shaped or dumbbell-shaped.7,8,9

Surgery is the usual conduct of choice for isolated lesions. Some studies have described the use of cryotherapy. There are no effective drugs for disseminated forms of the disease. ❑

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588 Carvalho KA, Floriano MC, Enokihara MMSS, Mascarenhas MRM

An Bras Dermatol. 2015;90(4):586-8.

How to cite this article: Carvalho KA, Floriano MC, Enokihara MMSS, Mascarenhas MRM. Jorge Lobo’s Disease.

An Bras Dermatol. 2015;90(4):586-8.

REFERENCES

1. Lobo J. Um caso de blastomicose produzido por uma espécie nova, encontrada em Recife. Rev Med Pernambuco. 1931;1:763-5.

2. Rodríguez-Toro G. Lobomycosis. Int J Dermatol. 1993;32:324-32.

3. Haubold EM, Cooper CR Jr, Wen JW, McGinnis MR, Cowan DF. Comparative morphology of Lacazia loboi (syn. Loboa loboi) in dolphins and humans. Med Mycol. 2000;38:9-14.

4. Papadavid E, Dalamaga M, Kapniari I, Pantelidaki E, Papageorgiou S, Pappa V, et al. Lobomycosis: A case from Southeastern Europe and review of the literature. J Dermatol Case Rep. 2012;6:65-9.

5. Baruzzi RG, Lacaz CS, Souza FAA. História natural da doença de Jorge Lôbo.

Ocorrência entre os índios Caiabi (Brasil Central). Rev Inst Med Trop São Paulo.

1979;21:302-38.

6. Queiroz-Telles F, Nucci M, Colombo AL, Tobón A, Restrepo A. Mycosis of implantation in Latin America: an overview of epidemiology, clinical manifestations, diagnosis and treatment. Med Mycol. 2011;49:225-36.

7. Brito AC, Quaresma JAS. Lacaziosis (Jorge Lobo`s disease): review and update.

An Bras Dermatol. 2007;82:461-74.

8. Reif JS, Schaefer AM, Bossart GD. Lobomycosis: risk of zoonotic transmission from dolphins to humans. Vector Borne Zoonotic Dis. 2013;13:689-93.

9. Baruzzi RG, Rodrigues DA, Michalany NS, Salomão R. Squamous-cell carcinoma and lobomycosis (Jorge Lobo’s disease). Int J Dermatol. 1989;28:183-5.

10. Bustamante B, Seas C, Salomon M, Bravo F. Case report: Lobomycosis successfully treated with posaconazole. Am J Trop Med Hyg. 2013;88:1207-8.

MAILING ADDRESS:

Kalline Andrade de Carvalho Rua Borges Lagoa, 508 Vila Clementino

04038-000 São Paulo-SP, Brazil E-mail: kalline.carvalho@hotmail.com

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