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Updated: Dec 15, 2025

Two-Dimensional X-Ray Angiography to Examine Fine Vascular Structure Using a Silicone Rubber Injection Compound
Published on: January 7, 2019
Case for diagnosis. Infiltrated areas on the trunk
Larissa Daniele Machado Góes1, Juliana Alves Scrignoli2, Patrícia Morais3
1Tropical Dermatology Clinic, Fundação de Dermatologia Tropical e Venereologia Alfredo da Matta, Manaus, AM, Brazil.
Leprosy, a chronic infectious disease, can mimic connective tissue disorders. A case highlights the importance of considering leprosy in differential diagnoses, even after years of treatment for other conditions.
Area of Science:
- Dermatology
- Infectious Diseases
- Rheumatology
Background:
- Leprosy, caused by Mycobacterium leprae, is a chronic infectious disease primarily affecting skin and peripheral nerves.
- Clinical presentations of leprosy can overlap with connective tissue diseases, complicating diagnosis.
- Systemic lupus erythematosus (SLE) shares some dermatological and neurological symptoms with leprosy.
Observation:
- A 49-year-old woman with a four-year history of SLE diagnosis was referred for evaluation.
- A skin biopsy revealed borderline lepromatous leprosy with a type 1 lepra reaction.
- The patient's initial diagnosis of SLE was re-evaluated based on new findings.
Findings:
- The skin biopsy confirmed leprosy, misdiagnosed for years as SLE.
- The presence of a type 1 lepra reaction indicated an active inflammatory response.
- This case underscores diagnostic challenges in differentiating leprosy from autoimmune diseases.
Implications:
- Highlights the need for a broad differential diagnosis in patients with chronic, overlapping symptoms.
- Emphasizes the importance of skin biopsy in diagnosing challenging dermatological conditions.
- Suggests that early and accurate diagnosis of leprosy is crucial for effective treatment and preventing complications.
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