Case and Research Letter
Refractory Anogenital Warts: Good Response to Photodynamic Therapy
Condilomas acuminados resistentes a los tratamientos convencionales con buena respuesta a tratamiento con terapia fotodinámica
B. Pinilla Martín
, R. Rivera Díaz, V. Monsálvez Honrubia
Corresponding author
Servicio de Dermatología, Hospital Universitario 12 de Octubre, Madrid, Spain
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Monsálvez Honrubia" "autores" => array:3 [ 0 => array:4 [ "nombre" => "B." "apellidos" => "Pinilla Martín" "email" => array:1 [ 0 => "belenpinillamartin@gmail.com" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "*" "identificador" => "cor0005" ] ] ] 1 => array:2 [ "nombre" => "R." "apellidos" => "Rivera Díaz" ] 2 => array:2 [ "nombre" => "V." "apellidos" => "Monsálvez Honrubia" ] ] "afiliaciones" => array:1 [ 0 => array:2 [ "entidad" => "Servicio de Dermatología, Hospital Universitario 12 de Octubre, Madrid, Spain" "identificador" => "aff0005" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "Condilomas acuminados resistentes a los tratamientos convencionales con buena respuesta a tratamiento con terapia fotodinámica" ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1199 "Ancho" => 751 "Tamanyo" => 138836 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0005" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Lesions before the first session of photodynamic therapy.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Anogenital warts are produced by specific genotypes of human papillomavirus (HPV). Although this condition is benign, its treatment can prove difficult owing to the lack of response, local adverse effects, and frequent recurrences<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a>. The mechanism of action of photodynamic therapy (PDT) involves destruction of specific previously sensitized cells and tissues with an exogenous photosensitizer that is activated by light of a given wavelength for an appropriate duration of exposure<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a>. The literature provides few data on its use in the treatment of genital warts, and, given that it is applied off-label<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3,4</span></a>, no clear guidelines have been prepared.</p><p id="par0010" class="elsevierStylePara elsevierViewall">A 56-year-old man from Peru was evaluated for treatment of several anogenital warts on the penis. He had a long history of pustular psoriasis that had been treated with different drugs both in monotherapy and in combination with other agents (methotrexate, acitretin, ciclosporin, infliximab, etanercept, and ustekinumab), nonalcoholic fatty liver disease, and pulmonary tuberculosis during adolescence that had been treated appropriately.</p><p id="par0015" class="elsevierStylePara elsevierViewall">He had had anogenital warts for 15 years. Biopsy and genotyping revealed HPV subtypes 6, 16, 40, 42, 53, and 61. After the initial diagnosis, the patient had received various local treatments, which, in order of prescription, included podophyllotoxin solution, imiquimod 5% cream, and treatments to which he did not respond: topical cidofovir 1% for 4 months, with partial but insufficient improvement of the lesions, as well as cryotherapy and sinecatechins, again with no response. The patient then received PDT based on methyl aminolevulinate<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a> (2 cycles of 2 sessions), with a minimal clinical response. From then on, treatment was with imiquimod 5% (3 times weekly for 12 weeks); the response was partial although insufficient and temporary. The patient’s psoriasis improved during therapy with imiquimod, thus making it possible to reduce his immunosuppressive treatment (from methotrexate and ustekinumab to ustekinumab in monotherapy). Given the poor response to previous treatments (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>), a new cycle of PDT was started with 5-aminolevulinic acid<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> at a concentration of 78<span class="elsevierStyleHsp" style=""></span>mg/g. The incubation time was 3 hours, and the irradiation time was 8.2 minutes with red light at 635<span class="elsevierStyleHsp" style=""></span>nm (Aktilite CL 128, Galderma). Local anesthetic with mepivacaine 2% was administered to minimize pain at the treatment site.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">A clinical response was observed as early as the first cycle, with flattening of the lesions (<a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a>), and a complete response was achieved after a further 3 cycles administered weekly. Four months after the end of treatment, the only finding was an atrophic plaque of scar tissue (<a class="elsevierStyleCrossRef" href="#fig0015">Fig. 3</a>). Tolerance was excellent, and no local or systemic adverse effects were recorded.</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0025" class="elsevierStylePara elsevierViewall">PDT receives little attention in the literature, and reports are mainly case studies and series. Use of PDT as monotherapy<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a> and in combination with other treatments (previous carbon dioxide laser<a class="elsevierStyleCrossRefs" href="#bib0030"><span class="elsevierStyleSup">6,7</span></a>, cryotherapy<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a>, and curettage<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a>) is promising, with response rates greater than 70%—in some series all patients achieve complete remission—and a low incidence of recurrence, possibly because this treatment modality also acts on subclinical lesions<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a>. Nevertheless, these data should be interpreted with caution. In the present case, the fact that the response to treatment came some months after reducing immunosuppressive treatment leads us to believe that the absence of response to the previous treatments (including the first one with PDT) can be explained—at least in part—by the immunosuppression induced by the drugs the patient was taking. Patients with cellular immunosuppression of any cause are more susceptible to diseases induced by various types of viruses. The lesions induced by HPV in particular produce a more florid clinical picture (i.e., more numerous and larger lesions), a diminished response to treatment, and a greater incidence of relapse than in immunocompetent patients. Furthermore, the first application of PDT could have proven insufficient in the present case, since only 2 cycles were administered, compared with the 3 cycles subsequently administered. As this treatment is administered off-label, we do not know if there are differences in efficacy between the 2 photosensitizers currently sold for treatment of anogenital warts.</p><p id="par0030" class="elsevierStylePara elsevierViewall">In the present case, we observed an optimal response to treatment, with no recurrences during the 4 months of follow-up after the end of treatment. We administered local anesthetic to prevent pain during exposure to the light source, and tolerance of treatment was excellent.</p><p id="par0035" class="elsevierStylePara elsevierViewall">In conclusion, PDT could be a safe and effective approach for the treatment of anogenital warts. It is especially useful in immunosuppressed patients with lesions refractory to standard treatment.</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflicts of interest</span><p id="par0040" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest with respect to the drug used in the present report.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:2 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "Conflicts of interest" ] 1 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as: Pinilla Martín B, Rivera Díaz R, Monsálvez Honrubia V. Condilomas acuminados resistentes a los tratamientos convencionales con buena respuesta a tratamiento con terapia fotodinámica. Actas Dermosifiliogr. 2022;113:210–212.</p>" ] ] "multimedia" => array:3 [ 0 => array:8 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1199 "Ancho" => 751 "Tamanyo" => 138836 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0005" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Lesions before the first session of photodynamic therapy.</p>" ] ] 1 => array:8 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 710 "Ancho" => 787 "Tamanyo" => 72960 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0010" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Lesions before the last session of photodynamic therapy.</p>" ] ] 2 => array:8 [ "identificador" => "fig0015" "etiqueta" => "Figure 3" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr3.jpeg" "Alto" => 1295 "Ancho" => 787 "Tamanyo" => 112597 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0015" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Four months after the end of treatment with photodynamic therapy.</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:10 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:1 [ "referenciaCompleta" => "AEPCC-Guía: Condilomas acuminados, 2015 [Accessed 19 May 2020]. 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| Year/Month | Html | Total | |
|---|---|---|---|
| 2024 November | 18 | 8 | 26 |
| 2024 October | 120 | 47 | 167 |
| 2024 September | 90 | 33 | 123 |
| 2024 August | 125 | 63 | 188 |
| 2024 July | 76 | 38 | 114 |
| 2024 June | 87 | 68 | 155 |
| 2024 May | 83 | 38 | 121 |
| 2024 April | 78 | 33 | 111 |
| 2024 March | 65 | 42 | 107 |
| 2024 February | 68 | 37 | 105 |
| 2024 January | 61 | 35 | 96 |
| 2023 December | 48 | 12 | 60 |
| 2023 November | 60 | 31 | 91 |
| 2023 October | 53 | 30 | 83 |
| 2023 September | 63 | 35 | 98 |
| 2023 August | 49 | 21 | 70 |
| 2023 July | 63 | 35 | 98 |
| 2023 June | 57 | 23 | 80 |
| 2023 May | 71 | 19 | 90 |
| 2023 April | 56 | 18 | 74 |
| 2023 March | 92 | 29 | 121 |
| 2023 February | 67 | 30 | 97 |
| 2023 January | 62 | 39 | 101 |
| 2022 December | 86 | 48 | 134 |
| 2022 November | 62 | 52 | 114 |
| 2022 October | 91 | 53 | 144 |
| 2022 September | 67 | 50 | 117 |
| 2022 August | 65 | 44 | 109 |
| 2022 July | 64 | 39 | 103 |
| 2022 June | 63 | 44 | 107 |
| 2022 May | 86 | 54 | 140 |
| 2022 April | 99 | 49 | 148 |
| 2022 March | 138 | 96 | 234 |
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