then finally dissecting them subperiosteally with a periosteal
elevator under direct vision. The sequence of visualization,
bipolar cauterization, and subperiosteal dissection has to
be meticulously and patiently repeated till all tumor
attachments have been dissected off and the entire tumor
is completely free from the surrounding tissues.
RESULTS
Our results in this case were very gratifying. The total
intraoperative blood loss in this case was 200cc. The patient
required no blood transfusion. Since the operative field
was bloodless, after complete tumor excision, no anterior
or posterior nasal packing was required. The raw area
was covered with antibiotic soaked gel foam alone. The
patient was monitored closely in the intensive care unit
for 24 hours following surgery. His postoperative course
was uneventful. Histopathology confirmed the diagnosis
of angiofibroma. He has remained free of recurrence 6
months postoperatively (Fig VII)
The second difficulty is in being able to visualize all the
tumor extensions detected on CT Scan (Lloyd DM et al
1999) even with angled telescopes. It may be necessary
to remove part of the middle turbinate, the medial and
posterior wall of the maxillary sinus and other similar bony
partitions so as to release the bottlenecking of the tumor
and visualize it completely (Fig VI).
DISCUSSION
With the evolution of endoscopic surgery, better
instrumentation and greater experience in the field, it is
now possible to view endoscopic excision of angiofibroma
as a viable alternative to open surgery.
The most significant advantage of this technique is that it
allows meticulous dissection of the tumor under direct
vision in the subperiosteal plane. This minimizes bleeding
making it possible to visualize all tumor extensions aim
remove them completely. With this technique, we therefore
hope to see a decrease in the recurrence rate (Herman P
et al 1999). There is also a significant decrease in the
postoperative morbidity as the patient requires no nasal
packing and is able to breathe, eat, and talk freely within
hours of surgery. The absence of any facial scar is also a
major advantage in young adolescent males.
There are two major difficulties that need to be effectively
solved before endoscopic excision is possible. First, the
bleeding has to be kept to the minimum to allow proper
visualization. This is ensured by preoperative embolisation
(Tranbahuy P et al, 1994). visualizing the attachments of
the tumor, cauterizing them with bipolar diathermy and