An Unusual Cause of Mediastinal Mass and Chylothorax.

Mediastinal masses are commonly encountered in clinical practice. The commonly encountered anterior mediastinal masses include those of thymic or thyroid origin, teratomas, and lymphoma. Establishing the diagnosis by histopathology is essential considering the wide range of differential diagnosis and to exclude malignancies. Here, we present an unusual case of large mediastinal mass with chylothorax in a young immunocompetent female.