“…3 Topical or oral corticosteroids lead to resolution in most cases, but interruption of radiation may be necessary. 1,4 Our patient's presentation is most consistent with a diagnosis of Sweet syndrome associated with radiation, as evidenced by the concentration of the rash in the irradiated field, rapid response to treatment with topical corticosteroids, and no symptom recurrence after discontinuing radiation therapy. Because our patient later developed lung metastases, we cannot exclude the possibility that occult tumor induced his lesions.…”