Cytology in practice

Cytology in practice

1. advantages/ uses

   • Quick, easy, inexpensive
   • screening tool - what diagnostic procedure next?
   • minimal risk to patient

2. cytology samples

   • Aspiration or imprints
     • superficial masses
     • Organs + deep masses (US guided)
     • LNs
   • Fluids
     • body cavities
     • Joints
     • respiratory tract
       • BAL (Bronchoalveolar lavage)
       • TTW - transtracheal wash
     • CSF
   • STUDY CELLS
     • FNB
       • no negative pressure
       • small gauge needle, insert several times
     • FNA
       • If FNB unsuccesful
       • needle centre of mass

3. histopathology samples

   • cons
     • more expensive (sterility)
     • slow - 48hr min
     • Poor detail w' round cell tumours
   • STUDY TISSUES - biopsy
   • uses
     • tissue architecture
     • tumour grading
     • immunohistochemistry