title: Mucoepidermoid carcinoma of the bronchus in a 4-year-old child. A high-grade variant with lymph node metastasis.
abstract: A high-grade mucoepidermoid carcinoma with lymph node metastasis occurred in the bronchus of a 4-year-old child. The tumor was pedunculated, obstructive, and invasive. Squamous and glandular elements were seen on light and electron microscopic examination. This is a very rare tumor in the pediatric age group. This is the first instance of this lesion associated with metastasis.
mesh_terms: D001984:Bronchial Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D002277:Carcinoma / Q000473:pathology* / Q000648:ultrastructure; D002466:Cell Nucleolus / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D002675:Child, Preschool; D003593:Cytoplasm / Q000648:ultrastructure; D003896:Desmosomes / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000648:ultrastructure; D008207:Lymphatic Metastasis