Kimura's disease

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Obesity, Sleep & Internal medicine
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Kimura's disease
Micrograph of Kimura's disease
Synonyms	Eosinophilic hyperplastic lymphogranuloma
Pronounce	N/A
Specialty	N/A
Symptoms	Painless subcutaneous nodules, lymphadenopathy, eosinophilia
Complications	Renal disease
Onset	Typically in young adult males
Duration	Chronic
Types	N/A
Causes	Unknown
Risks	Asian descent, male gender
Diagnosis	Biopsy, blood tests showing eosinophilia
Differential diagnosis	Angiolymphoid hyperplasia with eosinophilia, lymphoma, salivary gland tumors
Prevention	N/A
Treatment	Corticosteroids, surgical excision, radiation therapy
Medication	N/A
Prognosis	Generally good, but may recur
Frequency	Rare
Deaths	N/A

Kimura's disease is a rare, chronic inflammatory disorder that primarily affects the head and neck regions. It is characterized by the presence of painless subcutaneous nodules, lymphadenopathy, and elevated levels of eosinophils in the blood. The disease is most commonly observed in young adult males of Asian descent.

Clinical Presentation

Patients with Kimura's disease typically present with painless, slow-growing masses in the head and neck regions, particularly in the parotid gland and submandibular gland. These masses are often accompanied by lymphadenopathy and may be associated with pruritus and erythema. In some cases, patients may also exhibit nephrotic syndrome due to renal involvement.

Pathophysiology

The exact cause of Kimura's disease remains unknown. However, it is believed to be an immune-mediated disorder. Histologically, the disease is characterized by the presence of lymphoid follicles, eosinophilic infiltration, and vascular proliferation. The elevated levels of eosinophils and IgE suggest an underlying allergic or hypersensitivity reaction.

Diagnosis

The diagnosis of Kimura's disease is primarily based on clinical presentation and histopathological findings. Imaging studies such as ultrasound, CT scan, and MRI can help in assessing the extent of the disease. A definitive diagnosis is made through a biopsy of the affected tissue, which reveals characteristic histological features.

Treatment

There is no definitive cure for Kimura's disease. Treatment is primarily aimed at managing symptoms and may include corticosteroids, immunosuppressive drugs, and surgical excision of the nodules. In cases of renal involvement, treatment may also involve managing nephrotic syndrome.

Prognosis

Kimura's disease is a benign condition with a good prognosis. However, it is a chronic disease with a tendency for recurrence. Long-term follow-up is recommended to monitor for potential complications and recurrences.

See also

• Lymphadenopathy
• Eosinophilia
• Parotid gland
• Submandibular gland
• Nephrotic syndrome
• Immune-mediated disorder

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