Health Topics A-Z

Browse by letter: L × Topic category: Diseases and Conditions × Clear all
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Leishmaniasis

Diseases and Conditions

Leishmaniasis is a parasitic disease transmitted by the bites of infected sand flies, found across dozens of countries worldwide and is classified as a neglected tropical disease.

Lung Cancer

Diseases and Conditions, Cancer

Lung cancer includes two main types: non-small cell lung cancer and small cell lung cancer. Smoking causes most lung cancers, but nonsmokers can also develop lung cancer.

Lymphoma

Diseases and Conditions, Cancer

Lymphoma is a broad term for cancer that begins in cells of the lymph system. The two main types are Hodgkin lymphoma and non-Hodgkin lymphoma (NHL). Hodgkin lymphoma can often be cured. The prognosis of NHL depends on the specific type.