Congenital cystic adenomatoid malformation of the lung is a developmental abnormality characterized by abnormal proliferation of terminal bronchioles forming cysts of varying sizes. Extensive lesions are associated with a poor prognosis due to the development of nonimmune hydrops and/or pulmonary hypoplasia. The advent of high-resolution ultrasonography has made it possible to identify these le...

Chondro-osseous respiratory epithelial adenomatoid hamartoma is a rare hamartomatous lesion of the nasal cavity, with only five cases reported in the literature to date. We report the case of a 3-year-old boy who presented with nasal obstruction and a mass in the left nasal cavity. The mass was completely resected on endoscopy. On microscopy, hamartomatous proliferation of respiratory-type glan...