Brain Lesion in Children involving the Posterior Fossa

Aka: Brain Lesion in Children involving the Posterior Fossa, Brain Tumors of the Posterior Fossa in Children, Posterior Fossa Tumors in Children, Pediatric Brain Tumor of the Posterior Fossa

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II. Symptoms: Common presentation

  1. Nausea or Vomiting
  2. Headache
  3. Ataxia
  4. Visual Symptoms (Diplopia)
  5. Poor appetite
  6. Weight loss
  7. Dizziness

III. Symptoms: Occasional

  1. Personality change
  2. Lethargy
  3. Neck Pain
  4. Dysphagia
  5. Weakness
  6. Head Tilt
  7. Seizures

IV. Signs: Common Presentation

  1. Vomiting (often in the morning)
  2. Papilledema
  3. Ataxia
  4. Nystagmus
  5. Gaze Palsy
  6. Bulbar palsy
  7. Facial weakness
  8. Corticospinal tract abnormalities
  9. Obstructing Hydrocephalus

V. Signs: Occasional

  1. Irritability
  2. Meningismus
  3. Opisthotonus
  4. Lethargy
  5. Dysmetria
  6. Head Tilt

VI. Differential Diagnosis: Mass lesion on head imaging

  1. Mature abscess with capsule
    1. Bacteria
    2. Fungus
    3. Parasitic Infection (Cysticercosis)
  2. Granulomatous lesion
    1. Tuberculosis
    2. Sarcoidosis
  3. Multiple Sclerosis
    1. Large solitary demyelinated Plaque
  4. Hematoma
    1. Differentiate from tumor with Hemorrhage
  5. Arteriovenous Malformation
  6. Cerebrovascular Accident (uncommon in children)
  7. Progressive Multifocal Leukoencephalopathy (rare)

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