Eighty percent of lung tumor in general, and 95% of malignant lung tumors in children are metastases. Wilms tumor and osteosarcoma are the most frequent tumors that spread to the lungs in this population.
Chest CT in the primary tool in assessing lung nodules in oncologic patients
Metastases appear as single or multiple circumscribed nodules, often peripheral and preferentially involving the lower lobes in those with hematogenous spread. A reticular or miliary pattern may occur with those demonstrating lymphangitic spread
The biology of the tumor as well as the treatments ( mainly chemotherapy) may alter the appearance of the metastasis. But sometime the appearance is unusual and become a diagnostic challenge.
We present the atypical appearance of lung metastases in pediatric patients from “bubble like” lung metastase to intra vascular metastase.
