Total Skin Electron Beam Therapy (TSET) is a radiation technique which is used to treat patient’s entire/total skin surface using electron beams .
TEST is used to treat Cutaneous T-Cell Lymphoma and/or Mycosis Fungoides. Mycosis Fungoides (MF) is a malignancy of helper T cells and accounts for 50% of all cutaneous lymphomas. Clinically it can present as erythematous and scaling skin patches which are generally annular or arc shaped. These later on progress to form infiltrative scaling plaques, nodules and sometimes have superficial ulcerations.
Figure 1 – Clinical Pics of patients with MF
Aim while treating such type of cutaneous lymphomas is to deliver a therapeutic prescribed dose to entire skin of the body to a shallow depth by sparing the deep seated tissues and organs.
Technically TSET is a complex treatment and requires experienced team of Radiation Oncologists, Medical Physicists and Technologists to carry it out well. TSET requires complex dosimetry and quality assurance processes before and during treatment.
At Max Hospital, Shalimar Bagh we have been treating patients of mycosis fungoides/cutaneous lymphomas with TSET regularly and with very rewarding results.
For each treatment, patients are asked to stand in different positions, alternating daily (total 6 positions) in front of Linear Accerlator. Each position exposes entire patient’s skin to the radiation beam of low energy electrons. (Figure 2-3)
Everyday Patients nail bed and eyes are shielded before treatment using special applicators and lead goggles. (Fig 4)
Figure 2 – Patient positioned in front of Linear Accelerator
Figure 3- Clinical sketch of six treatment positions used for delivering TSET
Figure 4- Nail bed shielding and lead goggles
POSSIBLE SIDE EFFECTS OF TSET AND PREVENTIVE MEASURES:
- Itchy skin – keep skin moisturized, wear cotton cloths
- Dry cracking skin – apply moisturizer
- Sun sensitivity- wear sunglass , cap and full gown
- Fatigue – take rest and eat healthy food
- Temperature regulation- Avoid humid hot weather and drink plenty of water
- Partial temporary hair loss
TSET is the most effective treatment modality for MF. It is a technically challenging and demanding treatment modality and requires stringent quality assurance and team work.