Page 8 - index
P. 8


Updates on Canine Brain tumors:
options to make the diagnosis (part 2)

➤ Continued from Page 6


19-gauge securing needle and a 10-gauge serrated cutting
cannula. A CO quick stick freeze localizes the target
2
tissue around the securing needle, followed by advance-
ment of a rotating cutting cannula. The securing needle
stabilizes the specimen using contact freezing while the
rotating cutting canula minimizes distal displacement of
the biopsy specimen during harvest. Although one sur-
geon can perform both tasks, it is preferable to have one
surgeon or assistant generate the image while the other
operates the biopsy system. On histologic examination
of the stick-freeze specimens, freezing artifact appears
minimal and has not compromised interpretation. No intra-
operative complications have been noted and hemorrhage
is considered minimal.(Figure 6 & 7a-c) o
Figure 5a-b Intraoperative ultrasound units are found at only select universities and provided
real time evaluations at during surgical procedures using miniaturized U/S probes.



safely be harvested to confrm their diagnoses before costly adjunc-
tive therapy like radiation or chemotherapy is recommended. (Figure
5a & b)
Sanarus freeze core biopsy system
®
The main indication for using a small biopsy instrument with ultra-
sound guidance for obtaining brain tumor samples is for lesions that
are not readily accessible surgically (e.g., deep-seated tumors). These
less accessible lesions are often not biopsied due to fear of unaccept-
able morbidity and mortality associated with conventional surgical
biopsy techniques. Once the operative portal is created, the brain mass
is imaged utilizing the intraoperative ultrasound and maintained in
real time while the securing needle of the Sanarus freeze core biopsy
®
system is placed intralesionaly. The Sanarus freeze core
®
biopsy system uses an ultrasound-guided,

























Figure 6a-c The Sanarus freeze
®
core biopsy system utilizes a CO2 cartridge
(a) to provide cooling for the quick stick freeze and
a combined securing needle and a rotating cutting Figure 7a-c The securing needle (a) stabilizes the specimen using
cannula cartridge (b). The hand piece contains the contact freezing (b) while the rotating cutting canula advances and
operational control buttons (c) retracts (c) revealing the biopsy specimen.

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