A clinical study on juvenile nasal angiofibroma in a tertiary hospital of Kerala.
The Angiofibroma is a benign tumour arising at the region of posterior nares or nasopharynx. It is a highly vascular, locally invasive, non-encapsulated tumour.  Although, its local behaviour is the antithesis of benignity, this tumour is not malignant for it never metastasises nor does it infiltrate adjacent tissues.  Since its early description as a nasal polyp in fourth century B.C by Hippocrates, it has earned repute as an enigmatic tumour.  Angiofibroma, juvenile basal fibroma, bleeding, fibroma of adolescence are some of synonyms for this condition.  The lesion produce its clinical effects during the adolescent years, so the adjective "Juvenile" is prefixed to the designation. Whether the tumour regresses with age and maturity, whether it possess a chance of malignant transformation are two debatable topics.  The special importance lies in the fact that it spreads beyond the confines of nasopharynx. As a result of extensions, the tumour expands the nose, fills the antrum and in turn expands the cheek and at times invades the ethmoid and produces a "frog face deformity." It also erodes into the orbit and cranial cavity.  The tumour has got fairly rapid, extensive growth and relatively great tendency to recur. The management of Angiofibroma is a therapeutic challenge even to the well-versed head and neck surgeons. What makes it a nearly dreaded disease is its propensity to produce massive haemorrhage, both spontaneous and peroperative.  The present study attempts to analyse the clinical features, radiological signs and treatment adopted at Government Medical College Hospital.
Aim of the Study
To study the incidence, mode of presentation and clinical course of the disease; to highlight the relevant investigations deemed necessary to make the diagnosis of juvenile nasopharyngeal Angiofibroma; outline the application and advantages of various surgical procedures in each particular case of Angiofibroma.
MATERIALS AND METHODS
Between Jan 2003 and December 2006, 52 patients were admitted and treated in the Dept. of ENT, Medical College, Kozhikode. A retrospective study was conducted on these patients by scrutinising the case records and during followup.
1. All the patients aged between 12 to 25 years were included.
2. All the patients presenting with nasal mass and history of bleeding from the nasal cavity were included.
3. Patients who have undergone surgery and whose records were available were included.
4. Patients with histopathological reports given as Angiofibroma are included.
1. Patients below 13 years and above 38 years were excluded.
2. Patients with negative reports of Histopathology as Angiofibroma were excluded. The demographic data of the patients was recorded; incidence of tumour with reference of age, sex and site of origin, mode of presentation, clinical findings, different types of investigation and different modalities of treatment, post-operative problems and also the followup were extracted from the case records and analysed using standard statistical methods. Histopathological examination of the excised tumour was undertaken. All patients had been operated in this institution itself. The data was collected in accordance to the proforma.
This is a retrospective study that covers a period of 5 years from Jan. 2003 to Dec. 2007. It includes 30 patients who presented to the Department of ENT of a Government Teaching Hospital, Kozhikode. The year wise distribution of Angiofibroma of the nasal cavity is shown as the incidence among all the ENT patients attending the ENT Department; 0.05% shown in the (Table 1).
Of these 52 patients, 2 patients were operated twice during this 5-year period. One patient was operated in 2003 and re-operated in 2005 and the other was operated in 2004 and 2006. All patients were males and their age varied from 13 years to 38 years with a mean age of 19.4 [+ or -] 2.6 years. The youngest was a 13-year-old boy, who had undergone a previous surgery for Stage IV Angiofibroma at the age of 8 years in this hospital. The eldest patient was 38 years old, who had undergone the surgery after a period of 5 years of nasal obstruction and epistaxis (Table 2).
This table shows that > 90% of the patients were below the age of 25 years. But the occurrence of tumour in 3 patients above the age of 30 years shows that it does not regress after the age of 30 years or it may appear de novo in older patients (Table 2). Progressive nasal obstruction and nasal bleeding were the main presenting symptoms in all the patients; 3 patients had cheek swelling. Other symptoms included recurrent nasal discharge, blocked ear sensation, headache, nasal tone of voice, snoring, etc. None of the patients had orbital symptoms or swallowing difficulty (Table 3).
In 34 patients, the main complaints were on the (L) nasal cavity, while 16 had (R) sided complaints. The duration of their symptoms varied from 6 months to 12 months in 28.84% of the patients reported to the ENT Department and between 13 to 24 months in duration in 23.06% and less than 6 months in 21.15% (Table 4).
8 patients gave history of previous surgery and one patient was treated with radiotherapy for the same complaint. Duration between previous treatment and recurrence vary from 3 months to 6 years (Table 5).
Clinical examination revealed on Anterior Rhinoscopy, a firm reddish mass in 20 patients, a mass on Posterior Rhinoscopy in 21 patients; 05 patients presented with cheek swelling and 04 with a bulging mass in the Nasopharynx (Table 6).
Only 42 CT scan reports were available among the 52 patients for analysis. In one patient, no nasal or nasopharyngeal lesion was detected. This was the case of recurrence after radiotherapy. CT scan revealed the recurrence in the pterygopalatine fossa. All patients were investigated with routine haemogram and urine analysis. CT scan was taken in all patients except two and MRI was taken in ten patients. These helped to find out the extension of the tumour and also helped in the selection of surgical approach (Table 7).
In this study, the commonest extra-nasopharyngeal extension of the tumour was to the sphenoid sinus 19/52. All three cases with intracranial extension, middle cranial fossa extension were noted, but there was no intradural involvement. Even though orbital extension was noted in one patient, the peri-orbital tissue was intact and it did not affect the vision or eye movement. Depending on the CT scan findings, cases were staged according to the classification of Chandler et al (1984), (Table 7). All patients were treated surgically.
Surgical approach depends on the size and extension of tumour. Hypotensive general anaesthesia was adopted to reduce the bleeding during the surgical removal of Angiofibroma from the patients. All patients were given a betablocker, either propranolol or atenolol on the preoperative day and a morning dose on the day of surgery. Instead of atropine, glycopyrrolate was used as the anticholinergic drug in the premedication. The blood pressure was maintained between 80-90 mmHg systolic during the removal of the tumour mass. This was achieved by using titrated dose of Sodium Nitroprusside and halothane. This helped to achieve a bloodless field for surgery and minimum blood replacement per operatively. Most of the earlier studies showed a blood loss of 1.5-2 litres and each patient received 6 - 8 pints of blood during surgery. But in our studies, the average blood loss was only 500 mL and maximum blood replacement was 2 pints. Three of our patients did not require any blood transfusion. No external carotid ligation or embolisation was needed in any of our case. One of the patients who had undergone transnasal excision of the tumour developed recurrence after 2 years and he was re-operated by transpalatal approach. One of the patients with intracranial extension underwent combined transpalatal and sublabial excision of the tumour developed recurrence and was re-operated by Weber Ferguson's approach. Both of these patients are symptom free now (Table 8).
Wilson's transpalatal approach was used for tumours confined to nasopharynx and paranasal sinuses. In extensive extension to pterygopalatine, tumour in the nasopharynx removed by transpalatal approach and the lateral extensions removed by a sublabial route. In cases with extensive lateral extension to infratemporal fossa with or without intracranial involvement, a midfacial degloving approach or Weber Ferguson's approach gave a good exposure for tumour clearance. The average blood loss was 500 mL and it was corrected with whole blood transfusion; 3 patients did not require any blood replacement. There was no correlation between the age of the patient and vascularity of the tumour. Also, bleeding has no relation with the staging of the disease. Probably, the judicious use of hypotensive anaesthesia helped to control the blood loss and also it provided a bloodless field for surgery. Nasal pack removed after 24-48 hours.
There was no major complication except one patient developed meningitis, but fully recovered with medical treatment; 5 patients had small palatal gap, which was spontaneously healed; 7 patients had synaechiae in the nasal cavity, but it does not interfere with normal breathing in any of them. The remaining 39 patients did not show any postoperative complications (Table 9).
In this retrospective study of 52 cases, the peak incidence of disease was noticed between 16 - 20 years. The mean age was 19.4 [+ or -] 2.6 years. Martin, Ehrlich and Abels  (1948) reported a series of 29 cases with an average of 16 years. New G. B. and Figi F. A. (1925)  in 51 cases reported an average of 15.1 years. Shaheen  (1930) in reviewing 58 cases stated the most common age to be between 15 - 25 years (age varied from 2 - 70 years). In our study also more than 77% of patients were between 11 - 25 years; 12 (> 23%) patients were above the age of 25 years. This denotes that spontaneous regression after 25 years do not occur in Angiofibroma. Typical cases have been noted by Conley and Healyii (1968), who have recorded a 79-year-old male. All 32 cases were males, which goes in accordance with many studies. But Figi and New  (1992) reported an incidence of 7% in females. Also Shaheen  (1930) reported 8% incidence in females. Wilson and Hanefee  in 1969 mentioned 2 female cases, but later they were histologically suggested the final diagnosis of haemangioendothelioma for one and adenoid hypertrophy for the other. The main complaints were nasal obstruction and epistaxis in the present study. The duration of symptoms varied from 1 month to 5 years. There was no correlation between the duration of illness and extend of tumour. One patient with extensive lateral extension gave a short history of 1 month duration. The cheek extensions are clinically apparent and are found to occur through the lateral wall of nasopharynx. After destroying the pterygoid plates, the tumour extend to pterygopalatine fossa winding round the posterior surface of maxilla through pterygomaxillary fissure, thus entering the cheek. Martin  described an alternate route to cheek by anterior extension of tumour to nasal fossa and then by transmaxillary extension to cheek destroying medial and anterolateral walls of maxilla. In this study, all patients had lateral extension through destruction of pterygoid plates.
17.30% (09/52) patients gave a history of previous treatment in this study. But the time interval of recurrence varies from 3 months to 6 years. In 9 patients (17.30%) the tumour was confined to nasopharynx and 82.69% had extra nasopharyngeal extension of the tumour, similar to Jones et al  (82.5%). Thus, the present study report and of Jones et al (1986) are very similar in extra nasopharyngeal extension. Intracranial extension occurs in 10% of cases. Jones et al have given a much higher incidence (30%). Krekonien and Keto  (1976) gave an incidence of 10% - 20% intracranial extension, which favours the finding in our study. According to Chandler's  classification (1984), (based on 23 cases) 40% come in Stage II, 30% in Stage III, 20% in Stage I and 10% in Stage IV (Table 11).
In this study, 09 patients presented with history of previous surgery or radiation therapy. Two patients reported in this series showed recurrence during the study period itself. Overall, recurrence rate is (9/52) 17.30% (Table 12).
No cases of spontaneous regression noted in this study and also no sarcomatous transformation occurred in any of our case. Batsakis  in 1955 reported a sarcomatous change in the primary tumour of Angiofibroma. Harma in 1972 indicated a 2-year interval after surgery without recurrence indicated cure. But in this study recurrence occur even after 6 years was 17.30%. So a longer followup period is required to conclude as a cure. In suspected cases, CT scan is a must to diagnose early recurrence. Histopathology of all the 52 tumours excised revealed a fibrocellular stroma with spindle cells and haphazard arrangement of collagen interspersed with an irregular vascular pattern.
Juvenile Nasopharyngeal Angiofibroma is a highly vascular, benign yet locally invasive tumour. It is prevalent in adolescent males, similar tumours seen in females are not this particular disease, and totality of male incidence of this disease strongly indicates the need for chromosome studies of females with this diagnosis. CT scan is very important in finding out the extent of tumour and deciding the mode of treatment. Surgery is the treatment of choice. There is no single surgical technique, which solves all of the problems encountered. The lateral wall of nasopharynx, region of sphenopalatine foramen found to be the commonest site of origin.
 Apostel JV, Frazell EL. Juvenile nasopharyngeal angiofibroma. A clinical study. Cancer 1965;18:869-78.
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Binu Raju George (1), Beena Oommen (2)
(1) Assistant Professor, Department of ENT, Government Medical College, Kozhikode, Kerala.
(2) Assistant Professor, Department of ENT, Government Medical College, Kozhikode, Kerala.
Financial or Other, Competing Interest: None.
Submission 09-02-2016, Peer Review 08-03-2017, Acceptance 15-03-2017, Published 23-03-2017.
Corresponding Author: Dr. Binu Raju George, Assistant Professor, Governmen t Medical College, Kozhikode, Kerala.
Table 1. Showing Year Wise Distribution of Angiofibroma patients attending the Hospital (n = 52) Year Total Number of No. of Cases ENT Patients Incidence 2003 17824 09 0.05% 2004 18965 10 0.05% 2005 19870 10 0.05% 2006 21653 12 0.05% 2007 23213 03 0.01% 101525 52 0.05% Table 2. Showing the Age Wise Distribution of Angiofibroma Patients (n = 52) Age No. of Pts. Percentage 11-15 Years 10 19.23% 16-20 Years 18 34.61% 21-25 Years 12 23.07% 26-30 Years 09 17.30% > 30 Years 03 05.76% Table 3. Showing the Presenting Symptoms in the Patients (n = 52) Presenting Symptoms No. of Pts. Percentage Nasal 1. Nasal obstruction 42 80.76% 2. Bleeding from nose 41 88.46% 3. Nasal mass 27 51.92% 4. Broadening of nose 06 11.53% 5. Altered sense of smell 11 21.15% 6. Nasal tone of voice 14 26.92% 7. Headache 10 19.23% Aural 1. Blocked ear sensation 08 15.38% Face 1. Cheek swelling 05 9.61% Eye 1. Bulging of eye 03 5.76% 2. Watering of eye 03 5.76% 3. Defective vision 02 3.84% Table 4. Showing the Duration of Symptoms prior to Presentation (n = 52) Duration of Symptoms No. of Pts. Percentage < 6 months 11 21.15% 6-12 months 15 28.84% 13-24 months 12 23.06% > 24 months 14 26.92% Table 5. Shows the Patients with Previous Treatment (n=09) Mode of Treatment No. Age Groups Transpalatal surgery 5 26 - 30 Yrs. Transnasal surgery 3 26 - 30 Yrs. Radiotherapy 1 > 31 Yrs. Table 6. Showing the Examination Findings (n = 52) ARS - Nasal mass: 20 PRS - Nasopharyngeal mass: 21 Bulge in NP roof: 06 Cheek swelling: 05 Table 7. Showing the CT Scan and MRI Findings (n = 52) CT Scan Findings- 42 Pts. No. of Pts. Nasal Cavity 19 Nasopharynx 23 Extra-nasopharyngeal extension with multiple sinus involvement combination: Sphenoid 19 Ethmoid 9 Maxillary antrum 7 Pterygopalatine fossa 10 Infra-temporal fossa 6 Cheek and temporal fossa 3 Orbit 1 Intracranial extension 3 Table 8. Showing the Comparison between CT Scan and Per-Operative Findings to know the Specificity (n = 52) CT Scan CT Scan + Per Op Findings Stage I 07 07 Stage II 24 24 Stage III 19 19 Stage IV 02 02 52 52 Table 9. Showing the various Surgical approaches Adopted (n = 52) Transpalatal 27 Sublabial 08 Combined 08 Weber Ferguson's 06 Transnasal 03 Table 10. Showing the Post-Op Complications (n = 52) No complication 39 Meningitis 01 Palatal gap 05 Synechiae 07 Table 11. Showing Comparative Study Clinical Features Apostle et al (1) Present Study Nasal Obstruction 90% 80.76% Bleeding 80% 88.46% Cheek Swelling 30% 10% Table 12. Showing the Comparative Study with Chandler's Study (n = 52) Stage I II III IV Chandler (6) 10% 20% 45% 25% Present Study 20% 40% 30% 10% Table 13. Showing the Incidence of Recurrence (n = 52) Close et al (1989) 17% Jones et al (14) (1986) 24% English et al (1972) 25-50% Present Study- 09/52 17.30%
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|Title Annotation:||Original Research Article|
|Author:||George, Binu Raju; Oommen, Beena|
|Publication:||Journal of Evolution of Medical and Dental Sciences|
|Date:||Mar 23, 2017|
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