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LETTER TO THE EDITOR
Year : 2012  |  Volume : 78  |  Issue : 6  |  Page : 754-756

Pleomorphic cutaneous sarcoidosis confined to lesions of vitiligo vulgaris in a patient with type 1 diabetes mellitus


Department of Dermatology and STD, University College of Medical Sciences and GTB Hospital, University of Delhi, New Delhi, India

Date of Web Publication13-Oct-2012

Correspondence Address:
Namrata Chhabra
Department of Dermatology and STD, 86-B, Pocket F, GTB Enclave, Dilshad Garden, Delhi-110 095
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0378-6323.102380

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How to cite this article:
Chhabra N, Pandhi D, Verma P, Singal A. Pleomorphic cutaneous sarcoidosis confined to lesions of vitiligo vulgaris in a patient with type 1 diabetes mellitus. Indian J Dermatol Venereol Leprol 2012;78:754-6

How to cite this URL:
Chhabra N, Pandhi D, Verma P, Singal A. Pleomorphic cutaneous sarcoidosis confined to lesions of vitiligo vulgaris in a patient with type 1 diabetes mellitus. Indian J Dermatol Venereol Leprol [serial online] 2012 [cited 2019 Jun 20];78:754-6. Available from: http://www.ijdvl.com/text.asp?2012/78/6/754/102380


Sir,

A 35-year-old male, known case of type 1 insulin-dependent diabetes mellitus (IDDM) and vitiligo vulgaris (VV) (stable for past 10 years) involving 15% body surface area, presented with multiple, asymptomatic, erythematous papules and nodules over the photo-exposed sites; forehead, periorbital area and nape of neck [Figure 1]. The lesions developed over the last one year. In addition, atrophic, scaly plaques over pre-auricular area [Figure 2], and psoriasiform papules and plaques over lower legs for the same duration were present. All these lesions were present over vitiligo macules. He also complained of dry cough with progressive dyspnea of three years duration (NYHA- New York Heart Association, Grade IV at presentation). Patient denied history of fever, anorexia, or weight loss. Ophthalmic evaluation revealed no abnormalities.
Figure 1: Erythematous papules and nodules confined to vitiligo patch over forehead

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Figure 2: Atrophic plaque over preauricular vitiligo patch

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Histopathology from nodular, psoriasiform, and atrophic lesion demonstrated non-caseating, well-defined, naked granulomas in dermis consistent with sarcoidosis [Figure 3]. Decrease in number of melanocytes in the basal layer was evident in the biopsy from VV lesions. The patient was further investigated to look for any systemic involvement, and the relevant investigations have been tabulated [Table 1]. All the blood investigations were within normal limits, except for raised serum angiotensin converting enzyme levels (96 U/L) and elevated blood sugar levels (fasting 208 mg/dl and postprandial 310 mg/dL). Thyroid function tests including anti-thyroglobulin antibody was within normal range. The chest X-ray revealed bilateral hilar lymphadenopathy with interstitial infiltrate predominantly at the bases, [Figure 4] whereas the contrast-enhanced computed tomography of chest revealed multiple bilateral non-enhancing mediastinal lymph nodes with nodular lesions, suggestive of sarcoidosis. Pulmonary function tests showed mild restrictive pattern. Patient refused to undergo bronchoscopy. The abdominal ultrasound was normal. On the basis of clinical evaluation and investigations, a diagnosis of sarcoidosis (both cutaneous and pulmonary) was made, and the patient was started on oral prednisolone 40 mg daily and hydroxychloroquine 200 mg twice daily and was advised photo-protection. For IDDM, he was continued on insulin titrated to blood sugar.
Figure 3: Epithelioid cell granulomas in dermis (H and E, ×100). Inset: epithelioid cell granulomas and the absence of lymphocytic mantle (H and E, ×400)

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Figure 4: Chest X-ray showing bilateral hilar lymphadenopathy and interstitial infiltrate, predominantly at the bases

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Table 1: Work-up of the patient pertaining to sarcoidosis

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The etiopathogenesis of cutaneous sarcoidosis remains obscure. It is thought that continued exposure of a genetically susceptible individual to an antigenic stimulus through the epidermis produces a chronic granulomatous inflammation.

A literature review revealed that sarcoidosis associated with autoimmune diseases was reported by several authors. Co-existence of sarcoidosis with autoimmune diseases like autoimmune thyroiditis, autoimmune hemolytic anemia, Sjogren's syndrome, idiopathic thrombocytopenic purpura, polyglandular autoimmune syndrome type III, insulin-dependent diabetes mellitus, celiac disease, vitiligo, pernicious anemia, Addison's disease, Sjogren's syndrome are now being increasingly reported. Such clinical cases reported support the concept of an underlying common genetic and immunopathogenic theory linking sarcoidosis to other autoimmune phenomena rather than just an accidental correlation. Considerable research has been conducted exploring the immunology of sarcoidosis. The prevailing hypothesis is that sarcoidosis is a unique cell-mediated type of autoimmune process. [1] Such a theory can link sarcoidosis to other autoimmune phenomenon existing in the same patient. The association of type 1 IDDM with both pulmonary and cutaneous sarcoidosis is uncommonly reported. Ours is the case with this rare association along with vitiligo vulgaris.

In addition, our patient had a rare concurrence of vitiligo vulgaris with cutaneous sarcoidosis with only four cases reported so far. Previous reports include one patient with subcutaneous nodules, pernicious anemia, autoimmune thyroiditis, and vitiligo [2] and second case with scar sarcoidosis, autoimmune thyroiditis, autoimmune hepatitis, and vitiligo. [3] The third case had recurrent scar sarcoidosis followed by vitiligo, [4] and the fourth case had co-existence of vitiligo and sarcoidosis with circulating autoantibodies. [5]

Another interesting point in our case was the strict localization of cutaneous sarcoidosis to lesions of VV. Strict anatomical co-localization of psoriasis and lichen planus on lesions of VV have been reported in literature with hypothesis suggested by the authors. [6],[7],[8],[9],[10] Anstey et al and Sardana et al suggested that photodamage within the vitiliginous skin may alter the expression of antigens identified by infiltrating T cells in lichen planus. [9],[10] Julian et al proposed that some cellular injury in vitiliginous skin might lead to immune mechanisms causing Koebner's phenomenon. [7] Young et al reported a case of concurrent lichen planus and sarcoidosis in the auditory canal, which was explained as Koebner's phenomenon. [11]

In conclusion, we present this case for the rare clustering of autoimmune diseases in the form of IDDM, VV and sarcoidosis with both pulmonary and cutaneous involvement. To the best of our knowledge, this is the second case report of the co-existence of cutaneous sarcoidosis with IDDM. It is, therefore, imperative to take cognizance of cutaneous and/or systemic sarcoidosis in type 1 diabetes since this autoimmune endocrine disease is one of the most frequent. Furthermore, the rare picture of polymorphic, cutaneous sarcoidosis confined to photo-exposed lesions of vitiligo is illustrated, which could be due to the immunological mechanisms resulting from the complex interplay of UV light and inflammation in vitiliginous skin. This aspect, however, needs to be explored further.

 
  References Top

1.Kataria YP, Holter JF. Immunology of sarcoidosis. Clin Chest Med 1997;18:719-39.  Back to cited text no. 1
[PUBMED]    
2.Barnadas MA, Rodríguez-Arias JM, Alomar A. Subcutaneous sarcoidosis associated with vitiligo, pernicious anaemia and autoimmune thyroiditis. Clin Exp Dermatol 2000;25:55-6.  Back to cited text no. 2
    
3.Marzano AV, Gasparini LG, Cavicchini S, Brezzi A, Caputo R. Scar sarcoidosis associated with vitiligo, autoimmune thyroiditis and autoimmune chronic hepatitis. Clin Exp Dermatol 1996;21:466-7.  Back to cited text no. 3
[PUBMED]    
4.Demirkök SS, Arzuhal N, Devranoðlu G, Demirkesen C, Tüzün Y. Recurrent sarcoidosis on a scar associated with vitiligo. J Dermatol 2007;34:829-33.  Back to cited text no. 4
    
5.Terunuma A, Watabe A, Kato T, Tagami H. Coexistence of vitiligo and sarcoidosis in a patient with circulating autoantibodies. Int J Dermatol 2000;39:551-3.  Back to cited text no. 5
    
6.De Sica AB, Wakelin S. Psoriasis vulgaris confined to vitiligo patches and occurring contemporaneously in the same patient. Clin Exp Dermatol 2004;29:434-5.  Back to cited text no. 6
    
7.Julian CG, Bowers PW. Strict anatomical coexistence of vitiligo and psoriasis vulgaris-a Koebner phenomenon? Clin Exp Dermatol 1996;21:464.   Back to cited text no. 7
    
8.Ujiie H, Sawamura D, Shimizu H. Development of lichen planus and psoriasis on lesions of vitiligo vulgaris. Clin Exp Dermatol 2006;31:375-7.  Back to cited text no. 8
    
9.Anstey A, Marks R. Colocalization of lichen planus and vitiligo. Br J Dermatol 1993;128:103-4.  Back to cited text no. 9
    
10.Sardana K, Sharma RC, Koranne RV, Mahajan S. An interesting case of colocalization of segmental lichen planus and vitiligo in a 14-year-old boy. Int J Dermatol 2002;41:508-9.  Back to cited text no. 10
    
11.Young O, Murphy M, Fitzgibbon J, O'Sullivan P. Koebner phenomenon of the ear canal skin. Auris Nasus Larynx 2009;36:82-4.  Back to cited text no. 11
    


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