Purpose or Case Report: 1. Describe the variety of pathologies affecting the chest wall and breast in the pediatric male.
2. Explain the ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI) characteristics of pediatric chest well including breast masses.
3. Recognize pitfalls on ultrasound imaging in evaluation of male chest wall and breast.
4. Discuss follow up and management of these lesions.
Methods & Materials: We reviewed chest wall/breast imaging including US, MRI and CT for male pediatric patients from age 0 to 18 years. This exhibit will explore the clinical presentation of chest wall lesions, including the typical and atypical locations and etiologies. Classic and unique cases will be presented with particular emphasis on ultrasound, CT and MRI imaging findings.

Results: Chest wall and breast lesions can be predominantly divided into a few broad categories including congenital, vascular, infectious, neoplastic and developmental. Congenital and vascular lesions include venolymphatic malformation, hemangioma and developmental rib anomalies. Infection can manifest as osteomyelitis or abscess, both very rare in the immunocompetent pediatric males. Metastasis, sarcoma, neurofibroma, lymphoma and neuroblastoma are some of the array of neoplastic lesions involving the pediatric male. The most common developmental and benign finding of the male breast is gynecomastia. Pectoral hypertrophy and obesity can manifest as pseudo-gynecomastia in adolescent males. In most cases, US is the initial imaging modality of choice to evaluate and biopsy male chest wall including breast lesions. MRI and CT can provide additional information about enhancement characteristics and multiplicity of lesions.
Conclusions: Chest wall and breast lesions in the pediatric male can often have a wide differential and knowledge of the particular radiographic characteristics can help narrow the imaging diagnosis. This exhibit will focus on the classical and common atypical imaging findings of chest wall and breast masses in the pediatric male that every radiologist should know.