Palliative Radiation Therapy

Palliative RT Basics - Gentle Relief Goals

• Definition: Radiation therapy to alleviate symptoms and improve Quality of Life (QoL) in incurable cancer.
• Primary Goals:
  • Symptom control (e.g., pain, bleeding, obstruction)
  • Improve/maintain QoL
  • Pain relief
  • Functional preservation
• Distinction from Curative RT: Focus on symptom relief, not cure; shorter courses, lower doses.
• Patient Selection:
  • Life expectancy (weeks to months).
  • Performance status (e.g., ECOG >2, Karnofsky <70).

⭐ Palliative RT aims to maximize Quality of Life (QoL) with minimal toxicity and treatment burden.

Palliative RT Indications - When to Soothe

Palliative radiotherapy (RT) aims to relieve symptoms and improve quality of life. Key indications include:

• Bone Metastases:
  • Pain relief (most common)
  • Impending pathological fracture
  • Neurological compromise (e.g., nerve root compression)
• Brain Metastases:
  • Neurological symptoms (e.g., headache, focal deficits)
  • Raised Intracranial Pressure (ICP)
• Spinal Cord Compression (MSCC): Urgent oncological emergency.
• Superior Vena Cava Obstruction (SVCO): Facial swelling, dyspnea.
• Symptomatic Primary/Local Disease:
  • Bleeding (e.g., lung, GI, GU cancers)
  • Obstruction (e.g., esophageal, rectal, airway)
  • Pain from local tumor invasion
• Painful Soft Tissue Masses/Fungating Lesions.

📌 Mnemonic: BB SCALPSS - Bone metastases - Brain metastases - Spinal Cord compression - Airway obstruction / SVCO - Lung (symptomatic primary/mets) - Pelvis (pain/bleeding from gynae/rectal) / Pain - Skin / Soft tissue masses

⭐ Painful bone metastases are the most frequent indication for palliative radiotherapy worldwide.

Palliative RT Regimens - Speedy Symptom Soothers

Rapid symptom relief with minimal toxicity, patient convenience, and for limited life expectancy. Techniques: 2D, 3D-CRT.

• Goal: Fast symptom control (e.g., pain, obstruction).
• Common Schedules: 📌 "Simple 8, 20, 30"
  • 8 Gy x 1 fx: Bone/brain mets (esp. poor PS).
  • 20 Gy x 5 fx: Bone, brain, lung. Good balance.
  • 30 Gy x 10 fx: Various sites, durable palliation.
• Why Shorter Courses? ↓ visits, quick relief, suits poor prognosis.
• BED: $BED = nd(1 + d/(\alpha/\beta))$, tumor $\alpha/\beta \approx 10$ Gy. Palliative BEDs vary.

⭐ Single 8 Gy for bone mets pain relief is comparable to 20 Gy/5fx or 30 Gy/10fx.

RT in Emergencies - Rapid Response Needed

⭐ In Malignant Spinal Cord Compression, high-dose corticosteroids (e.g., dexamethasone) should be started immediately upon suspicion, even before definitive imaging or RT.

Toxicity & Care - Gentle Side Paths

• Manage site-specific acute effects:

  Site of RT	Common Acute Effect	Management Tip
  Skin	Erythema, desquamation	Hygiene, emollients
  Oral/Pharynx	Mucositis	Pain relief, oral care
  Esophagus	Esophagitis	PPIs, diet mods
  Abdomen/Pelvis	Nausea/Vomiting, Diarrhea	Antiemetics, anti-diarrheals

• General care: Prophylaxis, symptomatic relief; adapt dose/fractionation if severe.
• Multidisciplinary palliative care & clear communication (side effects, QoL) are vital.

⭐ Fatigue is an extremely common and often debilitating side effect of palliative radiation therapy, regardless of the treatment site.

High‑Yield Points - ⚡ Biggest Takeaways

• Palliative RT aims for symptom relief and improved quality of life, not cure.
• Key indications: Painful bone metastases, brain metastases, spinal cord compression, SVC obstruction.
• Common regimens: Shorter courses, larger fractions (e.g., 8Gy in 1 fraction, 30Gy in 10 fractions).
• Urgent RT is vital for spinal cord compression and superior vena cava obstruction.
• Treatment response is gauged by symptom improvement.
• Side effects are typically milder and localized to the treated area.