Mediastinal lymphadenopathy or mediastinal adenopathy is an enlargement of the mediastinal lymph nodes.
the musical term for loud is F or forte and for soft P or piano.
The terms riff and fill are sometimes used interchangeably by musicians, but [while] the term riff usually refers to an exact musical phrase repeated throughout a song, a fill is an improvised phrase played during a section where nothing else is happening in the music. While riffs are repeated, fills tend to be varied over the course of a song.