Related Experiment Video
Updated: Feb 11, 2026
Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs
Published on: April 21, 2012
[Cutaneous ulceration: metastases should be suspected]
Youssef Zemmez1, Badreddine Hassam1
1Service de Dermatologie, CHU Ibn Sina Rabat, Maroc.
Abstract:
We report the case of a 68-year old patient, with a history of chronic smoking, presenting with cutaneous swelling at the level of the anterior chest wall evolving over a period of 5 months and gradually increasing in size. It was associated with gradually worsening exertional dyspnoea evolving in a context of an alteration of general state and 15kg weight loss. Mucocutaneous examination objectified rounded, well-defined cutaneous swelling measuring 5cm x 5cm, with erythematous border and with ulcerated surface (A). Lymph nodes examination showed two painless, mobile, bilateral axillary adenopathies with a firm consistency, each measuring 2cm. Histological and immuno-histochemical examination of skin biopsy specimen showed adenocarcinoma compatible with a lung origin (B and C). Chest CT scan confirmed the presence of left lingular pulmonary process (D). The therapeutic approach was based on pemetrexed + platinum salt chemotherapy. The patient died 4 months after the diagnosis of the disease.
Related Concept Videos
01:28Peptic Ulcer Disease II: Pathophysiology
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.
01:30Peptic Ulcer Disease I: Introduction
An acute ulcer, marked by superficial erosion and minimal inflammation, swiftly resolves upon identifying and addressing the underlying cause. In contrast, a chronic ulcer persists, potentially eroding through the muscular wall and forming fibrous tissue.
Peptic ulcers can also be...
01:26Peptic Ulcer Disease IV: Management
The therapeutic approach involves ensuring adequate rest, implementing drug therapy, promoting smoking cessation, making dietary modifications, and emphasizing long-term follow-up care.
Pharmacological management
The prevailing therapy for peptic ulcers involves a combination of managing the patient's current...
01:29Drugs for Treatment of Ulcerative Colitis in IBD
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
01:22Pathophysiology of Peptic Ulcer Disease: Injurious Factors
In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds...