Indian J Sex Transm Dis Indian J Sex Transm Dis
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LETTER TO EDITOR
Year : 2017  |  Volume : 38  |  Issue : 1  |  Page : 96-97
 

Solitary plaque in the perianal region


1 Department of Dermatology, Katihar Medical College and Hospital, Katihar, Bihar, India
2 Department of Dermatology, KPC Medical College and Hospital, Kolkata, West Bengal, India

Date of Web Publication30-Mar-2017

Correspondence Address:
Piyush Kumar
Department of Dermatology, Katihar Medical College and Hospital, Katihar, Bihar
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7184.196890

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How to cite this article:
Barkat R, Das A, Kumar P, Savant SS. Solitary plaque in the perianal region. Indian J Sex Transm Dis 2017;38:96-7

How to cite this URL:
Barkat R, Das A, Kumar P, Savant SS. Solitary plaque in the perianal region. Indian J Sex Transm Dis [serial online] 2017 [cited 2017 Nov 21];38:96-7. Available from: http://www.ijstd.org/text.asp?2017/38/1/96/196890


Sir,

Bowen's disease is a premalignant dermatosis mostly affecting the sun-exposed sites. It usually develops in response to certain predisposing factors. We hereby report a case of an elderly gentleman with perianal Bowen's disease.

A 58-year-old farmer presented with a pruritic scaly patch over the lower back, present for the preceding 1 year. To start with, the lesion was a coin-sized patch, which gradually increased in size, and the patch began to ooze over the past 2 months. He sought treatment for this condition to multiple physicians, but there was no improvement. There was no history of pain, mucosal lesions, or any other skin lesions. On examination, a well-defined, erythematous, moist crusted plaque (7 cm × 5 cm) was present in the lumbosacral region [Figure 1]. There was no locoregional lymphadenopathy, and no similar lesions were found elsewhere in the body. Routine investigations were within normal limits, and the patient was seronegative for HIV. Systemic examination was unremarkable. Based on the clinical findings, differential diagnosis of Bowen's disease, psoriasis, extramammary Paget disease, and wart was made. Skin biopsy was performed from the lesion which showed marked epidermal hyperkeratosis, irregular acanthosis, scattered atypical keratinocytes, nuclear pleomorphism, and inflammatory infiltrate in the upper dermis [Figure 2] and [Figure 3]. On the basis of clinicopathological correlation, a diagnosis of Bowen's disease was made, and the patient was treated with complete surgical excision followed by full-thickness skin grafting.
Figure 1: Solitary moist plaque in the lumbosacral region

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Figure 2: Epidermal hyperkeratosis, irregular acanthosis, scattered atypical keratinocytes, nuclear pleomorphism, and inflammatory infiltrate in the upper dermis (H and E, ×100)

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Figure 3: Scattered atypical keratinocytes with mitotic figures and nuclear pleomorphism (H and E, ×400)

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Bowen's disease affects skin and mucosa. Since it is a premalignant condition, if untreated, it may develop into invasive squamous cell carcinoma.[1] Clinically, it is manifested with a solitary erythematous scaly papule which gradually enlarges to form a crusted moist plaque. It is usually found on the sun-exposed sites, most commonly head, neck, and extremities though covered areas can also get involved.[2],[3] Variants include pigmented, subungual, periungual, palmar, genital, perianal, verrucous, etc.[4] Histologically, atypical forms may be seen such as psoriasiform, atrophic, acantholytic, epidermolytic, and pagetoid.[5]

The etiopathogenesis of the condition remains unclear, but predisposing factors include chronic sun exposure, arsenic exposure, and human papillomavirus (16, 18, 31, 33, 39, and 52). Histology shows hyperkeratosis, parakeratosis, and elongated rete ridges. The keratinocytes are haphazardly arranged throughout the epidermis giving a “windblown appearance.” Besides, the cells show atypia with large hyperchromatic nuclei.[5]

The prognosis of Bowen's disease is favorable. There are only 5% chances of progression to invasive squamous cell carcinoma. Therapeutic modalities include topical agents such as 5-fluorouracil and imiquimod, surgery, curettage, cautery, and cryotherapy.[6],[7]

We are reporting this case for the presence of lesion in the sun-protected area (perianal region) without any evidence of anal intercourse, immunosuppression, and arsenic exposure.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

 
   References Top

1.
Pai K, Shetty S, Padmapriya J, Pai S, Rao L. Acantholytic variant of Bowen's disease with micro-invasive squamous cell carcinoma: A case report of a unique variant. Indian J Dermatol 2014;59:635.  Back to cited text no. 1
    
2.
Harnalikar M, Dongre A, Khopkar U. Bowen'S disease on palm: A rare presentation. Indian J Dermatol 2011;56:353-4.  Back to cited text no. 2
[PUBMED]  [Full text]  
3.
Vasani RJ. Bowen's disease on the dorsum of hand. Indian Dermatol Online J 2015;6:62-3.  Back to cited text no. 3
[PUBMED]  [Full text]  
4.
Singh S, Khaitan BK, Sharma MC, Seenu V, Kumawat M, Chatterjee P. Bowen's disease on finger: A diagnostic and therapeutic challenge. Indian J Dermatol Venereol Leprol 2013;79:227-30.  Back to cited text no. 4
  [Full text]  
5.
Swaroop MR, Manas SN, Nischal KC, Sathyanarayana BD, Basavaraj HB. Multiple Bowen's disease over the right gluteal region in a middle-aged male. Indian J Dermatopathol Diagn Dermatol 2014;1:97-8.  Back to cited text no. 5
  [Full text]  
6.
Barad P, Fernandes J, Shukla P. Bowen's disease: A favorable response to imiquimod. Indian Dermatol Online J 2014;5:546-7.  Back to cited text no. 6
  [Full text]  
7.
Pai VV, Hanumanthayya K, Naveen KN, Rao R, Dinesh US. Bowen's disease over the abdomen – A histological pigmented variety. Indian J Cancer 2011;48:121-2.  Back to cited text no. 7
[PUBMED]  [Full text]  


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