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ulcer US English

An open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane that fails to heal

mouth ulcer US English

An open sore inside the mouth

peptic ulcer US English

A lesion in the lining (mucosa) of the digestive tract, typically in the stomach or duodenum, caused by the digestive action of pepsin and stomach acid

rodent ulcer US English

A slow-growing malignant tumor of the face (basal cell carcinoma)

decubitus ulcer US English

Technical term for bedsore.

perforating ulcer US English

An ulcer which penetrates completely through a structure, especially the wall of the stomach, creating an opening on both surfaces.