What dose do you typically use when retreating locally aggressive and recurrent SCCs of the scalp (with no regional or distant mets)?

Not much great data to support this contention, but my general practice is EQD2 of 70-80 Gy in a continuous course using shrinking field technique, depending on prior radiotherapy and tolerance of nearby organs at risk. For gross disease, concurrent systemic therapy may be worthwhile in patients tha...