A DNA virus that may cause cutaneous warts, genital warts, or the clinical condition recurrent respiratory papillomatosis (RRP) in susceptible individuals. Human papillomavirus (HPV) may occur in as many as 150 or more subtypes. The most common subtypes seen in patients with RRP are HPV 6 and 11. Other less common subtypes that can induce papillomas or other growths within the larynx include HPV 16, 18, 31, 44, 45, 55, 69, 84 & 11, 33 & 45 and some of these subtypes are associated with a higher risk of cancer formation. See the photo series below, displaying all of the subtypes mentioned above.
Papillomas: HPV Subtype 6 (1 of 4)
Papilloma, left vocal cord (right of image), standard light. Voice is grossly hoarse. This patient has HPV subtype 6.
Papillomas, removed: HPV Subtype 6 (3 of 4)
After removal and cidofovir injection, normalized larynx. Voice is normal.
Subtle papillomas, HPV subtype 6 (1 of 3)
After achieving a normal voice through several procedures, the patient came in for reexamination due to the return of mild huskiness. This distant panoramic view with standard illumination does not reveal any obvious papillomas.
Subtle papillomas, HPV subtype 6 (2 of 3)
At close range, using narrow band illumination, a subtle but definite HPV effect is seen. Notice the stippled vascular markings and the faintly increased pinkness at the margins of the cords, indicated by dotted lines.
Standard light, HPV-6 infection (1 of 4)
Breathing position, standard light in a young woman with longstanding HPV-6 infection. Voice remains quite good, many months after her last microsurgery with cidofovir injection. The only obvious “lesion” is posterior right cord (left of image) but the characteristic punctate vascular marks are not seen. The black lines are purely for use to orient photo 4.
Stobe light, vocal cord margin irregularity (2 of 4)
With such a clear voice, this prephonatory instant under strobe light reveals a surprising degree of vocal cord margin “serpentine” irregularity. Black lines again support orientation with photo 4.
Narrow band light, vascular marks seen (3 of 4)
At very close range and also using narrow band light, the tiny punctate vascular marks are seen in the lesion first seen in photo 1. Faint vascularity like that demonstrated here can be a correlate of relatively stable, inactive disease, which has clinically been the case here.
Narrow band light, papilloma formation (4 of 4)
This narrow band view includes only the anterior half of the vocal cords from the black lines of photos 1 and 2 to the anterior commissure (at x). Inside the faint circles, note the vascular markings that suggest papilloma formation to explain the serpentine margin.
Two papillomas (1 of 3)
Approximately one month after removal of papillomas and Avastin injection in a man who has battled aggressively-recurring disease caused by HPV, type 6. In this view using narrow band light, only two small papillomas are visible.
Stippled vascularity (2 of 3)
At closer range, careful inspection shows no papilloma (yet), but only the stippled vascularity typical of HPV infection.
Stippled vascularity not seen (1 of 4)
Diffuse involvement of true and false cords with papilloma caused by HPV 6. After hundreds of procedures from childhood through early adulthood, the stippled vascularity is not extremely evident in this standard-light view.
HPV vascular effect (2 of 4)
At closer range, still under standard light, the characteristic vascularity—what we term “HPV vascular effect”—is only beginning to be evident (arrows).
Vascularity clearly seen (3 of 4)
At still closer range, and now under narrow-band light, stippled vascularity is clearly seen (arrows).
Papillomas: HPV Subtype 11 (1 of 4)
Papillomas at posterior vocal cords, with left side (right of image) much larger than right. This patient has HPV subtype 11.
Papillomas: HPV Subtype 11 (2 of 4)
Closer view, under narrow band illumination, which accentuates the vascular pattern.
Papillomas, removed: HPV Subtype 11 (3 of 4)
Two weeks after microsurgical removal, cidofovir injection, and return of normal voice.
Papillomas: HPV Subtype 11 (1 of 3)
Panoramic view, standard light, shows papillomas on the aryepiglottic cord, false cords, anterior face of arytenoid, and at anterior commissure. This patient has HPV subtype 11.
Papillomas: HPV Subtype 11 (2 of 3)
Closer view, standard light, shows more clearly the papillomas on the anterior face of the right arytenoid and at the anterior commissure.
Papillomas: HPV Subtype 11 (1 of 2)
Vocal cords, narrow band light, showing papillomas on the upper surface of the anterior vocal cords. This patient has HPV subtype 11.
Lesions of HPV Subtype 16 (1 of 3)
Recurring inflammatory and leukoplakic lesions caused by HPV subtype 16. A left vocal cord cancer (right of image) was removed several years earlier, and the patient developed a right vocal cord cancer almost a year later.
Lesions of HPV Subtype 16 (2 of 3)
Slightly magnified view, focusing on the anterior (frontward) ends of the vocal cords. The cords' stippled vascularity, which often accompanies HPV infection, is more apparent here.
Cancer: HPV Subtype 16 (1 of 5)
Cancer, in a patient with HPV subtype 16. The divot and blood seen on the left vocal cord (right of image) are the result of a biopsy performed elsewhere (not by BVI physician) earlier the same day as this examination.
Cancer: HPV Subtype 16, after radiation therapy (3 of 5)
Six weeks after the end of radiation therapy, the tumor is no longer seen. However, part of the left cord (right of image) is missing, due to sloughing of the tumor that had eaten away part of the cord’s normal tissue.
Cancer: HPV Subtype 16, after radiation therapy (4 of 5)
Phonation. Strobe light, open phase of vibration, shows that the margin of the left cord (right of image) is at a lower level than the right’s, due to loss of some of the bulk of the cord where the tumor died and sloughed away.
Papillomas: HPV Subtype 31 (1 of 4)
Standard light, showing lesions on the vocal cords, in particular the stippled vascular pattern we call "HPV effect." The patient's voice was nearly gone, with numerous syllable drop-outs and a very effortful quality. Compare with photo 3.
Papillomas: HPV Subtype 31 (2 of 4)
Closer view, using narrow-band light to accentuate the vascular pattern of "HPV effect." Biopsy and additional testing of these lesions showed squamous papilloma with moderate dysplasia, and HPV subtype 31 was confirmed, which is high risk for eventually causing cancer. After the patient underwent several injections of cidofovir, the lesions persisted but seemed to become more indolent. On compassionate grounds, this fairly young person was then prescribed celecoxib for six months.
Papillomas, in remission: HPV Subtype 31 (3 of 4)
Three years after photos 1 and 2, standard light view. Within two months of the start of celecoxib, voice improved very noticeably, and the "HPV effect" vascularity resolved. Still, it is unknown what roles in this recovery were played by the patient's immune system, the cidofovir, and the celecoxib, respectively.
Hazy leukoplakia, HPV suspected (1 of 4)
This 20-something nonsmoker without reflux symptoms is chronically hoarse. HPV infection is suspected for the following reason: While hazy leukoplakia can be occasionally seen as a result of excessive voice use, it would be most unusual to this degree, and this far lateral to the vocal cord margin. Biopsy shows only chronic inflammation, and HPV testing is positive for subtype 31.
Leukoplakia remains (2 of 4)
Several months later, the inflammatory reaction with leukoplakia remains.
Leukoplakia demarcated (3 of 4)
Narrow band illumination here makes the leukoplakia patches more demarcated.
Voiceless 50-year-old man (1 of 6)
This 50-year-old man is virtually aphonic. The vocal cord abnormality is already visible in this distant view.
Vascular stippling (2 of 6)
At closer range and under standard light, the vascular stippling is becoming more visible. The two small 'X's are for reference with Photo 3.
Narrow band light, vascularity (3 of 6)
At even closer range under narrow band light, the vascularity is even more evident. The two small 'X's are for reference with Photo 2.
4 months later, recurrent papillomas (4 of 6)
This man had marked improvement of voice after surgery 4 months earlier but within weeks, voice began to deteriorate due to regrowth of his papillomas.
Open position, narrow band light (5 of 6)
Still in open (breathing) position but now under narrow band light. The stippled vascular markings typical of HPV effect are seen more clearly.
Papillomas: HPV Subtype 45 (1 of 2)
Papillomas in the supraglottis, left of image. The pink, velvety area of papillomas is outlined by small arrows.
HPV type 45 detected (1 of 7)
Panoramic view shows marked enlargement from tumor of false cords. Biopsy shows squamous cell and cancer HPV type 45 is also detected as the likely cause.
Closer view of HPV effect (2 of 7)
Closer view of the true vocal cords showing HPV effect of vascular stippling.
Post radiotherapy, glottic web seen (4 of 7)
After radiotherapy with complete response. A glottic web is now seen as a radiation side effect/complication.
Post-microlaryngoscopy, release of glottic web (6 of 7)
After microlaryngoscopy and release of glottic web. Tumor is gone.
Papillomas: HPV Subtype 55 (1 of 4)
Papillomas of the vocal cords, in a patient with HPV subtype 55, which is intermediate-risk for progressing to cancer.
Papillomas: HPV Subtype 55 (2 of 4)
Same exam, with narrow-band lighting, which accentuates the vascular pattern of the papillomas.
Papillomas, in remission: HPV Subtype 55 (3 of 4)
Same patient, years later, in remission, and with normal voice. No sign of papillomas here or anytime during the prior three and a half years, after meticulous removal and Cidofovir treatment.
Standard lighting (1 of 2)
Here, right vocal cord (left of photo) is unaffected, while left cord is entirely covered with papillomas caused by HPV 69.
Chronic hoarseness, papilloma (1 of 5)
60-something man with chronic hoarseness due to these lesions, seen under standard light. Biopsy shows "papilloma" and HPV testing reveals subtypes 84 & 11.
Stippled vascularity, leukoplakia (2 of 5)
At closer range under narrow band light, the stippled "HPV effect" vascularity is seen more clearly. The lesion marked by 'X' in this photo and photo 1 shows a subtle degree of leukoplakia.
Post treatment, voice is very good (3 of 5)
After several micro laryngoscopes, first using cidofovir as an adjuvant, and then avastin, the larynx looks quite clear. Voice is also very good.