Ultrasound Guided Interventional Procedures Flashcards
Common methods used to guide needle or catheter during breast interventional procedures?
free-hand technique and transducer needle guide
Complications related to breast interventional procedures?
- pain
- bleeding/ hematoma
- infection
- allergic reaction
- pneumothorax
- implant rupture
A seroma or hematoma that forms within a mammotomy cavity may take how long to resolve?
3-6 weeks
What type of analysis is ordered for a cloudy, purulent aspirate to exclude infection?
microbiology analysis (culture, gram stain/ sensitivity)
What gauge needle is used for cyst aspiration?
20-22 gauge
16-18 for thicker fluids
What gauge needle is used for fine-needle aspiration biopsy (FNAB)?
20-22 gauge
Limitations of FNAB?
- Greater chance of undersampling
- Requires an expert cytopathologist
- not accurate to differentiate in situ from invasive carcinoma
- Blood can reduce accuracy
- Not appropriate for microcalcs
What needle gauge is typically used for spring loaded core biopsies?
14-18 gauge
what is the length of a core sample?
10-20mm
Advantages of vacuum-assisted core biopsy?
- Larger samples reduces sampling error (8,9,10,11 gauge)
- Single needle insertion
- Small lesion may be completely removed
Disadvantages of vacuum-assisted core biopsy?
- Expensive and less available
- Higher chance of bleeding at site
- Not ideal for superficial mass or mass near implant
What is the probe used for vacuum-assisted biopsy?
Mammotome probe
What does ABBI stand for?
Advanced breast biopsy instrumentation
Requires mammographic stereotactic guidance for insertion of a 0.5cm-2 cm cutting cannula to excise a single core breast tissue for sampling.
ABBI: Advanced breast biopsy instrumentation
Pre-operative placement of what provides a visible guide for the surgeon to locate a nonpalpable mass for surgical excision?
Percutaneous needle wire and/or methylene blue dye
