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CORRESPONDENCE
Year : 2010  |  Volume : 55  |  Issue : 3  |  Page : 309-310
Delayed diagnosis in a case of perianal tuberculosis:Differential diagnosis in perianal ulceration


1 Department of Dermatology, Istanbul Medical Faculty, Istanbul University, Turkey
2 Department of General Surgery, Istanbul Medical Faculty, Istanbul University, Turkey

Date of Web Publication25-Sep-2010

Correspondence Address:
K Didem Yazganoglu
Department of Dermatology, Istanbul Medical Faculty, Istanbul University
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5154.70702

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How to cite this article:
Ozarmagan G, Keles S, Yazganoglu K D, Sokucu N. Delayed diagnosis in a case of perianal tuberculosis:Differential diagnosis in perianal ulceration. Indian J Dermatol 2010;55:309-10

How to cite this URL:
Ozarmagan G, Keles S, Yazganoglu K D, Sokucu N. Delayed diagnosis in a case of perianal tuberculosis:Differential diagnosis in perianal ulceration. Indian J Dermatol [serial online] 2010 [cited 2020 Feb 20];55:309-10. Available from: http://www.e-ijd.org/text.asp?2010/55/3/309/70702


Periorificial tuberculosis is a rare form of extrapulmonary tuberculosis. [1],[2],[3],[4] Diagnosis and treatment can be delayed in this type of tuberculosis as the differential diagnosis includes a large spectrum of diseases. An asymptomatic pulmonary tuberculosis case presenting with perianal ulceration, initially mistaken for a herpetic ulcer and Crohn's disease, is reported here.

A 28 year-old woman presented with a three-month history of two superficial, painful perianal ulcerations [Figure 1] with no inguinal lymphadenopathy accompanied. While colonoscopy was normal, biopsy showed nonspecific ulceration and granulation tissue rich with plasma cells. Cytomegalovirus (CMV), herpes simplex virus (HSV), human immunodeficiency virus (HIV), syphilis, hepatitis B and C serology were negative. Polymerase chain reaction from the tissue material was positive for HSV-1 and negative for HSV-2. She had hypochromic microcytic anemia and a high erythrocyte sedimentation rate (36 mm/h).
Figure 1 :Superficial perianal ulcerations at admission

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Initial diagnosis was genital herpes, but valacyclovir treatment did not heal the ulcerations. Another biopsy revealed granulomatous infiltration with Langhans type multinuclear giant cells, lymphocytes and histiocytes without necrosis. As necrosis was not observed with granulomatous infiltration and Ziehl-Neelsen stain did not show any acid-fast bacilli (AFB), Crohn's disease was primarily considered in the diagnosis. Two-week therapy with methylprednisolone and cyclosporine worsened the ulcerations, fever and night sweats were added to the complaints. Therefore therapy was stopped. Tuberculosis was considered in the diagnosis. Computed tomography of thorax showed bilateral miliary and cavitary infiltration on the right upper lobar posterior segment. The patient was anergic to the Mantoux test. An aspiration fluid specimen examined for AFB was negative with Ziehl-Neelsen stain, but positive with culture for Mycobacterium tuberculosis (M. tuberculosis).

The final diagnosis was pulmonary miliary tuberculosis with perianal tuberculosis. In the fifteenth day of four regimen antituberculosis therapy, perianal ulceration and pulmonary symptoms resolved.

Skin involvement is a rare form of extrapulmonary tuberculosis, whereas perianal tuberculosis representing a form of cutaneous tuberculosis, is even more rare. [1],[2],[3],[4] Periorificial tuberculosis results from autoinoculation of M. tuberculosis in patients with pulmonary, intestinal or genitourinary tuberculosis and manifests as oral, genital or anal ulcerations. [1] The bacilli are thought to reach and attack the traumatized mucosa or skin in swallowed sputum in cases of pulmonary tuberculosis. [2],[3] Rarely, it can occur as a result of hematogenous, lymphatic or direct spread of the disease. [2],[3] The initial manifestation of pulmonary tuberculosis can be these ulcers as also observed in our case. [1] Perianal tuberculosis is also reported without any presence of gastrointestinal or pulmonary tuberculosis. [4] Tuberculin test can be negative in these patients. [1],[3] Our patient was also anergic, which can be attributed to the miliary tuberculosis or immunosuppressive therapy.

Clinically indistinguishable from other causes of perianal ulcers, the differential diagnosis consists infectious diseases like syphilis, lymphogranuloma venereum, granuloma inguinale, chancroid, leishmaniasis, deep mycoses, amoebiasis; infections with HSV, CMV, HIV, varicella zoster virus, Cryptococcus neoformans, Mycobacterium avium/intracellulare; inflammatory bowel diseases like Crohn's disease, ulcerative colitis; pyoderma gangrenosum; sarcoidosis; neoplasias; and trauma. [1],[2],[3],[4],[5]

In conclusion, perianal ulcers can be the initial manifestation of tuberculosis even in asymptomatic patients. In order to make an early, exact diagnosis and start an appropriate treatment, in addition to histopathological examination, AFB must be searched both with Ziehl-Neelsen stain and culture.

 
   References Top

1.Leon-Mateos A, Sαnchez-Aguilar D, Lado F, Toribio J. Perianal ulceration: a case of tuberculosis cutis orificialis. J Eur Acad Dermatol Venereol 2005;19:364-6.  Back to cited text no. 1      
2.Betlloch I, Baρuls J, Sevila A, Morell A, Botella R, Roman P. Perianal tuberculosis. Int J Dermatol 1994;33:270-1.  Back to cited text no. 2      
3.Miteva L, Bardarov E. Perianal tuberculosis: a rare case of skin ulceration? Acta Derm Venereol 2002;82:481-2.  Back to cited text no. 3  [PUBMED]    
4.Akgun E, Tekin F, Ersin S, Osmanoglu H. Isolated perianal tuberculosis. Neth J Med 2005;63:115-7.   Back to cited text no. 4  [PUBMED]  [FULLTEXT]  
5.Schmitt SL, Wexner SD, Nogueras JJ, Jagelman DG. Is aggressive management of perianal ulcers in homosexual HIV-seropositive men justified? Dis Colon Rectum 1993;36:240-6.  Back to cited text no. 5  [PUBMED]    


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