pain syndromes in patients with cancer prof. miroslava pjevic
TRANSCRIPT
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Pain syndromes in patients with cancer
Prof. Miroslava Pjevic
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Pain syndromes in patients with cancer
ACUTE CANCER PAIN SYNDROMES
CHRONIC CANCER PAIN SYNDROMES
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ACUTE CANCER PAIN SYNDROMES
Acute pain associated with diagnostic and therapeutic procedures
Acute pain associated with anticancer therapies
Acute pain associated with malignant disease indirectly (infection, myalgia, decubitus)
Acute pain caused by tumor directly (intratumoral bleeding, pathological vertebral body fracture, acute bowel/ureteric obstruction)
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ACUTE PAIN SYNDROMES
Cherny NI, Portenoy RK,1994.
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(cont)
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ACUTE PAIN SYNDROMESCherny NI, Portenoy
RK,1994.
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(cont)
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Painful mucositis (5 - 15%)
Oral / pharyngeal
Oesophageal
Gastrointestinal (dyspepsia and diarrhoea)
Myeloablative chemotherapy and radiotherapy that precede bone marrow transplantation (40-100%) Pain after 3-5 d, max 7-10 d
Radiotherapy - head and neck (80-100%)
strong pain at the end of 2nd week, max 4th week
Persistent pain for about 2-3 weeks after radiotherapy
Risk of infection (candida, herpes simplex)
Incident BTP by taking food and swallowing
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CHRONIC CANCER PAIN SYNDROMES Tumor related pain syndromes
Pain syndromes of the bones
Pain syndromes of the viscera
Pain syndromes associated with neural tissue
Pain syndromes associated with cancer therapy
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CHRONIC
PAIN
SYNDROMES
Cherny NI, Portenoy RK,1994
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CHRONIC
PAIN
SYNDROMES
Cherny NI, Portenoy RK,1994
(cont)
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CHRONIC
PAIN
SYNDROMES
*
Cherny NI, Portenoy RK,1994
(cont)
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Bone pain Most common cause of chronic and progressive pain in the
cancer population is tumor infiltration of bone
primary (myeloma multiplex) Bone metastases/lesions
Bone pain: dull or aching, deep, often constant, especially strong at night, well localised (focal), multifocal or generalized (multiple bony metastases)
Early recognition (history, clinical finding, plain X-ray, “bone scan”, CT/ MRI)
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Bone metastases
Tumor infiltration of bone Lung ca 64% Breast ca 50-85% Prostate ca 60-85% Kidney ca 28-60% Urin. bladder ca 42% Gl thyroid. ca 28-60%
Multiple sites or localised
Vertebrae Pelvis Femur Ribs Base of skull
Bone is the most common site of tumor metastases
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Pain due to bone metastases
More often painful (60-80%)
Mechanical periosteum distortion (streching or pulling)
Tumor compression or infiltration of adjacent soft tissues, vascular structures, nerves (neuropathic/mixed pain)
Associated inflammation
Associated muscle spasms
Acute pain exacerbations (pathological fracture, EC of the spinal cord)
Increased with activity-incident BTP
Must be distinguished from other causes of bone pain
Dificult and chalenging pain treatment
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Vertebral syndromes The vertebre are the most common sites of bony
metastases Thoracic (70%) Lumbosacral (20%) Cervical (10%)
Multiple level involvment is common (85%)
Early recognition of pain syndromes due to tumor invasion of vertebral bodies is essential
Cauda equina syndrome is the most dificult complication of vertebral metastases
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Clinical recognition of epidural extension Rapid progression of back pain in a crescendo
pattern, persist at rest, worse at night
Radicular pain is later sign (compression /
infiltration of dorsal roots of spinal nerves), constant or lancinating, exacerbated by recumbency, cough, sneeze, relieved by standing, usually unilateral (cervical and l-s regions) and bilateral (thoracal region)
Epidural compression (EC) of the spinal cord (cauda equina) after period of progressive pain
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Epidural compression (EC) of the spinal cord (10%)
Back PAIN = initial symptom !Important to know and start EXTENSIVE evaluation and early
diagnosis
Cauda equina is the most serious complication of vertebral body metastases and is urgent state in oncology: Weakness Sensory loss Autonomic dysfunction and reflex abnormalities Paralysis (paraplegia, quadriplegia)
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Pain syndromes of the bony pelvis and hip
Common sites of bone metastases
Weight–bearing function of these bones(ambulation - incident BTP)
1. Pelvis: ischiopubic, iliosacral, periacetabular
2. Proximal femur
3. Hip joint syndrome Hip pain localised or radiates to the knee or
medial thigh, mixed pain if the lumbosacral plexus involved
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Pain syndromes of the viscera
Visceral tumor infiltration with or without pleura/peritoneum involved is the second most common cause of pain in patients with cancer (mixed nociceptive and neuropathic pain)
Abdominal pain syndromes are more common:
Hepatic distension syndrome (liver capsule, vessels and biliary tract) Midline retroperitoneal syndrome (coeliac plexus) Chronic intestinal obstruction (continuous and colicky pains) Peritoneal carcinomatosis Ureteric obstruction (tumor compression/infiltration within pelvis) Cancer perineal pain (tumors of the colon, rectum, female
reproductive and genitourinary system), constant and aching pain, aggravated by sitting, standing
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Pain syndromes associated with neural tissue
Pain involving the peripheral nervous system is the third common cause of pain in cancer patients
Neuropathic pain
Pain is initial symptom and should be recognized
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Pain syndromes associated with neural tissue
Painful radiculopathy Painful plexopathy (cervical, brachial,
lumbosacral)
Painful mononeuropathy
Painful peripheral neuropathies
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Cervical plexopathy (C1-C4)
Head and neck primary tumor infiltration/compression of the cervical plexus
Pain localised in pre/postauricular regions or anterior neck, may refer to the lateral aspect of the face or head and to the ipsilateral shoulder
Strong, aching, burning, lancinating pain, often exacerbated by neck movement or swallowing
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Brachial plexopathy Brachial plexopathy
tumor infiltration: Lung cancer (Pancoast) Breast cancer Lymphoma
Upper plexopathy (c5-C6)(pain in shoulder, lateral arm, first and second
fingers) Lower plexopathy (C8 –T1)
(pain in elbow, medial forearm, fourth and fifth
fingers)
Radiation- induced brachial plexopathy
Early-onset transient plexopathy
Delayed-onset progressive plexopathy
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Lumbosacral plexopathyLumbar plexus (L1-L4) and sacral plexus (L4-L5, S1-S3) tumor infiltration/compression (intrapelvic neoplasm: colorectal, cervical, lymphoma, sarcoma
Upper plexopathy (30%) Colorectal tumor Pain in the lumbar back, lower abdomen, anterolateral thigh, inguinal region, buttock, leg
Lower plexopathy (50%) Pelvic tumor: rectal, gynaecological, sarcomaPain in buttock, perineum, posterolateral leg aspect, autonomic dysfunction (intestinal, bladder), leg oedema
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In
summary
Early and right identification of cancer pain syndrome
may help and simplify complex management in cancer patients