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• W4291002920 abstract "Clinical presentationA 72-year-old man presented with a brownish plaque on his right buttock (Fig 1). The plaque was 15 mm in diameter, round, slightly elevated, and granular, resembling seborrheic keratosis (SK). He had been receiving prednisolone 5 mg/day and cyclosporine 100 mg/day for 6 years for hypersensitivity pneumonitis.Dermoscopic appearanceDermoscopy showed a brownish plaque with a frogspawn pattern (Fig 2, A) and dotted hairpin-like blood vessels in each papilla (Fig 2, B).Fig 2Dermoscopic images. B, shows the high magnification view of the black square area in (A). A slightly elevated brownish plaque with a papillary (frogspawn) pattern (A) and dotted and hairpin-like blood vessels in each papilla (B) were observed.View Large Image Figure ViewerDownload Hi-res image Download (PPT)Histologic diagnosisPapillary acanthosis with hyperkeratosis (Fig 3, A), parakeratosis, hypergranulosis, and a few koilocytes (Fig 3, B, arrows) were observed. Human papillomavirus (HPV)–6 was detected by polymerase chain reaction.Key messageCondyloma acuminatum, a common sexually transmitted disease caused by low-risk HPVs (HPV-6 or 11), usually occurs on the anogenital mucosa but may also occur on keratinized skin, especially in immunocompromised hosts. On keratinized skin, HPV-6/11 form flat brownish plaques, which sometimes mimic SK; however, they are distinguishable by dermoscopy.1Seong S.H. Jung J.H. Kwon D.I. et al.Dermoscopic findings of genital keratotic lesions: Bowenoid papulosis, seborrheic keratosis, and condyloma acuminatum.Photodiagnosis Photodyn Ther. 2021; 36102448Crossref PubMed Scopus (2) Google Scholar Comedo-like openings and milia-like cysts found in 71% and 66% of SK, respectively,2Braun R.P. Rabinovitz H.S. Krischer J. et al.Dermoscopy of pigmented seborrheic keratosis: a morphological study.Arch Dermatol. 2002; 138: 1556-1560Crossref PubMed Google Scholar are absent in condyloma. While vascular structures are rarely observed in SK, dilated blood vessels are observed in most cases of condyloma. The characteristic dermoscopic findings of condyloma are still observed even on keratinized skin, although the clinical picture differs from condyloma acuminatum on the mucosa. Dermatologists should be familiar with these clinical and dermoscopic pictures of condyloma on keratinized skin because of the need for appropriate treatment, such as topical imiquimod and cryotherapy, and patient education to prevent HPV infection.Fig 3Hematoxylin and eosin staining of the lesion. B, shows the high magnification view of the black square area in (A). Papillary acanthosis with hyperkeratosis (A), parakeratosis, hypergranulosis, and a small number of koilocytes were observed (B, arrows). Scale bars are 1 mm in (A) and 100 μm in (B).View Large Image Figure ViewerDownload Hi-res image Download (PPT) Clinical presentationA 72-year-old man presented with a brownish plaque on his right buttock (Fig 1). The plaque was 15 mm in diameter, round, slightly elevated, and granular, resembling seborrheic keratosis (SK). He had been receiving prednisolone 5 mg/day and cyclosporine 100 mg/day for 6 years for hypersensitivity pneumonitis. A 72-year-old man presented with a brownish plaque on his right buttock (Fig 1). The plaque was 15 mm in diameter, round, slightly elevated, and granular, resembling seborrheic keratosis (SK). He had been receiving prednisolone 5 mg/day and cyclosporine 100 mg/day for 6 years for hypersensitivity pneumonitis. Dermoscopic appearanceDermoscopy showed a brownish plaque with a frogspawn pattern (Fig 2, A) and dotted hairpin-like blood vessels in each papilla (Fig 2, B). Dermoscopy showed a brownish plaque with a frogspawn pattern (Fig 2, A) and dotted hairpin-like blood vessels in each papilla (Fig 2, B). Histologic diagnosisPapillary acanthosis with hyperkeratosis (Fig 3, A), parakeratosis, hypergranulosis, and a few koilocytes (Fig 3, B, arrows) were observed. Human papillomavirus (HPV)–6 was detected by polymerase chain reaction.Key messageCondyloma acuminatum, a common sexually transmitted disease caused by low-risk HPVs (HPV-6 or 11), usually occurs on the anogenital mucosa but may also occur on keratinized skin, especially in immunocompromised hosts. On keratinized skin, HPV-6/11 form flat brownish plaques, which sometimes mimic SK; however, they are distinguishable by dermoscopy.1Seong S.H. Jung J.H. Kwon D.I. et al.Dermoscopic findings of genital keratotic lesions: Bowenoid papulosis, seborrheic keratosis, and condyloma acuminatum.Photodiagnosis Photodyn Ther. 2021; 36102448Crossref PubMed Scopus (2) Google Scholar Comedo-like openings and milia-like cysts found in 71% and 66% of SK, respectively,2Braun R.P. Rabinovitz H.S. Krischer J. et al.Dermoscopy of pigmented seborrheic keratosis: a morphological study.Arch Dermatol. 2002; 138: 1556-1560Crossref PubMed Google Scholar are absent in condyloma. While vascular structures are rarely observed in SK, dilated blood vessels are observed in most cases of condyloma. The characteristic dermoscopic findings of condyloma are still observed even on keratinized skin, although the clinical picture differs from condyloma acuminatum on the mucosa. Dermatologists should be familiar with these clinical and dermoscopic pictures of condyloma on keratinized skin because of the need for appropriate treatment, such as topical imiquimod and cryotherapy, and patient education to prevent HPV infection. Papillary acanthosis with hyperkeratosis (Fig 3, A), parakeratosis, hypergranulosis, and a few koilocytes (Fig 3, B, arrows) were observed. Human papillomavirus (HPV)–6 was detected by polymerase chain reaction.Key messageCondyloma acuminatum, a common sexually transmitted disease caused by low-risk HPVs (HPV-6 or 11), usually occurs on the anogenital mucosa but may also occur on keratinized skin, especially in immunocompromised hosts. On keratinized skin, HPV-6/11 form flat brownish plaques, which sometimes mimic SK; however, they are distinguishable by dermoscopy.1Seong S.H. Jung J.H. Kwon D.I. et al.Dermoscopic findings of genital keratotic lesions: Bowenoid papulosis, seborrheic keratosis, and condyloma acuminatum.Photodiagnosis Photodyn Ther. 2021; 36102448Crossref PubMed Scopus (2) Google Scholar Comedo-like openings and milia-like cysts found in 71% and 66% of SK, respectively,2Braun R.P. Rabinovitz H.S. Krischer J. et al.Dermoscopy of pigmented seborrheic keratosis: a morphological study.Arch Dermatol. 2002; 138: 1556-1560Crossref PubMed Google Scholar are absent in condyloma. While vascular structures are rarely observed in SK, dilated blood vessels are observed in most cases of condyloma. The characteristic dermoscopic findings of condyloma are still observed even on keratinized skin, although the clinical picture differs from condyloma acuminatum on the mucosa. Dermatologists should be familiar with these clinical and dermoscopic pictures of condyloma on keratinized skin because of the need for appropriate treatment, such as topical imiquimod and cryotherapy, and patient education to prevent HPV infection. Condyloma acuminatum, a common sexually transmitted disease caused by low-risk HPVs (HPV-6 or 11), usually occurs on the anogenital mucosa but may also occur on keratinized skin, especially in immunocompromised hosts. On keratinized skin, HPV-6/11 form flat brownish plaques, which sometimes mimic SK; however, they are distinguishable by dermoscopy.1Seong S.H. Jung J.H. Kwon D.I. et al.Dermoscopic findings of genital keratotic lesions: Bowenoid papulosis, seborrheic keratosis, and condyloma acuminatum.Photodiagnosis Photodyn Ther. 2021; 36102448Crossref PubMed Scopus (2) Google Scholar Comedo-like openings and milia-like cysts found in 71% and 66% of SK, respectively,2Braun R.P. Rabinovitz H.S. Krischer J. et al.Dermoscopy of pigmented seborrheic keratosis: a morphological study.Arch Dermatol. 2002; 138: 1556-1560Crossref PubMed Google Scholar are absent in condyloma. While vascular structures are rarely observed in SK, dilated blood vessels are observed in most cases of condyloma. The characteristic dermoscopic findings of condyloma are still observed even on keratinized skin, although the clinical picture differs from condyloma acuminatum on the mucosa. Dermatologists should be familiar with these clinical and dermoscopic pictures of condyloma on keratinized skin because of the need for appropriate treatment, such as topical imiquimod and cryotherapy, and patient education to prevent HPV infection. Condyloma acuminatum, a common sexually transmitted disease caused by low-risk HPVs (HPV-6 or 11), usually occurs on the anogenital mucosa but may also occur on keratinized skin, especially in immunocompromised hosts. On keratinized skin, HPV-6/11 form flat brownish plaques, which sometimes mimic SK; however, they are distinguishable by dermoscopy.1Seong S.H. Jung J.H. Kwon D.I. et al.Dermoscopic findings of genital keratotic lesions: Bowenoid papulosis, seborrheic keratosis, and condyloma acuminatum.Photodiagnosis Photodyn Ther. 2021; 36102448Crossref PubMed Scopus (2) Google Scholar Comedo-like openings and milia-like cysts found in 71% and 66% of SK, respectively,2Braun R.P. Rabinovitz H.S. Krischer J. et al.Dermoscopy of pigmented seborrheic keratosis: a morphological study.Arch Dermatol. 2002; 138: 1556-1560Crossref PubMed Google Scholar are absent in condyloma. While vascular structures are rarely observed in SK, dilated blood vessels are observed in most cases of condyloma. The characteristic dermoscopic findings of condyloma are still observed even on keratinized skin, although the clinical picture differs from condyloma acuminatum on the mucosa. Dermatologists should be familiar with these clinical and dermoscopic pictures of condyloma on keratinized skin because of the need for appropriate treatment, such as topical imiquimod and cryotherapy, and patient education to prevent HPV infection. None disclosed." @default.
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• W4291002920 date "2022-10-01" @default.
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• W4291002920 title "Human papillomavirus–related condyloma on keratinized skin" @default.
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• W4291002920 doi "https://doi.org/10.1016/j.jdcr.2022.08.007" @default.
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