Kev Txiav Txim Siab Tus Qauv Rau Core Needle Biopsy Gauge, Ntev, Thiab Xaiv Xaiv
Jul 14, 2026
https://www.mayoclinic.org/tests-procedures/breast-biopsy/about/pac-20384812
Gauge (G) ua raws Birmingham Wire Gauge system-Cov lej siab dua qhia cov koob zoo dua. Lub mis CNB feem ntau siv 14G, 16G, thiab 18G. Kev xaiv sib npaug sib npaug cov yam ntxwv ntawm qhov txhab, kev ntsuas kev ntsuas, kev xav tau ntawm pathological, thiab tus neeg mob yam xwm txheej.
1. Kev sib piv Specification
|
Ntsuas |
Sab nraud Ø (mm) |
Sab hauv Ø (mm) |
Hom Notch Volume |
Pom zoo Scenario |
|---|---|---|---|---|
|
14G |
≈2.10 |
≈1.70 |
Loj tshaj plaws (≈1.8–2.2mm³/core) |
Thawj qhov kev kuaj mob, Microcalcifications, IHC subtyping xav tau, Tsis yog - cov kab mob loj |
|
16G |
≈1.65 |
≈1.35 |
Nruab nrab |
Palpable masses, Dense mis, Kev txhawj xeeb txog: los ntshav txaus ntshai |
|
18G |
≈1.27 |
≈1.02 |
Me me |
Kev kuaj mob ua ntej hauv cov neeg mob anticoagulated, Superficial me nodules |
|
12G |
≈2.77 |
≈2.40 |
Ntxiv - Loj |
VAB systems xwb; tsis tu ncua CNB |
Nco tseg: Kev ntsuas nce ntxiv los ntawm 2 txo tus ntoo khaub lig- ntu ntu los ntawm ~ 30%.
2. Clinical Selection Logic
Nyiam 14G Thaum:
- BI-RADS 4/5 nrog microcalcifications lossis architectural distortion (tsis yog- cov kab mob loj).
- Neoadjuvant chemotherapy npaj (yuav tsum muaj cov ntaub so ntswg txaus rau ER/PR/HER2/Ki-67/FISH).
- Lesion Ntau dua lossis sib npaug li 10mm nrog kev nyab xeeb.Txheem nyob rau hauv feem ntau Western cov chaw zov me nyuam.
16G Txais Thaum:
Palpable solid mass >15mm nrog ntshiab ultrasound ciam teb.
Extremely dense breasts (though 14G is still feasible; 16G offers slightly less insertion force).
Mob me me coagulopathy los yog tus neeg mob nyiam rau kev raug mob tsawg heev.Studies show no statistical difference in sensitivity/false negatives (>92%) vs. 14G rau pawg, txawm hais tias tsis tshua muaj subtype characterization tej zaum yuav cuam tshuam los ntawm ntim.
18G txwv rau:
Thawj triage lossis ua ke nrog FNA thaum cytology tsis txaus.
Cov kab mob loj heev lossis nyob ib sab ntawm cov hlab ntsha loj uas yuav tsum muaj txoj kab uas hla tsawg.
Tsis pom zoo ua ib leeg rau kev kuaj mob cancer mis(cov ntaub so ntswg tsis txaus rau tag nrho IHC).
3. Kev xaiv ntev
- 5-7 cm:Cov kab mob ntawm daim tawv nqaij; nruab nrab Asian mis thickness.
- 10 cm:Feem ntau ntau yam; tus qauv rau US -cov txheej txheem qhia.
- 13-16 cm: Deep lesions, obese patients (BMI >30), los yog contralateral mus kom ze.
- Cov cim qhov tob (cm) pab tiv thaiv kev ua txhaum pleural (ceev faj nrog cov kab mob tom qab).
4. Pov Length (Notch Length)
Cov phom Biopsy feem ntau muab 15mm lossis 22mm pov:
- 15mm (Nyem luv):Qhov zoo tshaj plaws nyob ze ntawm cov cog cog, hauv siab phab ntsa, los yog kaw calcifications los tiv thaiv overshooting.
- 22mm (Standard pov):Default rau niaj hnub CNB; yields ntev cores zoo rau histology.
- Qee cov phom tsis siv neeg puv muaj ob qhov chaw.
Optimizing Gauge thiab qhov ntev yog qhov tseem ceeb ntawm kev ntsuas qhov kev kuaj mob txaus nrog tus neeg mob kev nyab xeeb -ib lub ncauj lus nquag hauv kev kawm kho mob thiab kev sib tham txog kev muag khoom.
