Journal of Clinical & Experimental Dermatology Research

Journal of Clinical & Experimental Dermatology Research
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ISSN: 2155-9554

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Case Report - (2011) Volume 2, Issue 4

Paraneoplastic Pemphigus: An Unusual Neoplasm Association

Parviz Toosi1, Zahra Asadi Kani2, Mehdi Qeisari2 and Nastaran Namazi3*
1Professor of dermatology, Skin research center, Shohad-e-Tajrish hospital, Shahid Beheshti university of medical science, Tehran, Iran
2Dermatopathologist, Skin research center, Shohad-e-Tajrish hospital, Shahid Beheshti university of medical science, Tehran, Iran
3Resident of dermatology, Skin research center, Shohad-e-Tajrish hospital, Shahid Beheshti university of medical science, Tehran, Iran
*Corresponding Author: Dr. Nastaran Namazi, Resident of dermatology, Skin research center, Shohad-e-Tajrish hospital, Shahid Beheshti university of medical science, Tehran, Iran, Tel: +9821222741507, Fax: +9821222741512 Email:

Abstract

The occurrence of paraneoplastic pemphigus (PNP) in childhood has been reported infrequently. Association with benign mesentry tumors has not been reported in these patients before. Here, we report an unusual case of PNP in a child that was concomitant with benign mesentry fibroma and responded to medical treatment only after surgical excision of tumor.

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Keywords: Paraneoplastic pemphigus; Neoplasm association; Benign tumor; Mesentry fibroma

Introduction

PNP, described by Anhalt et al. in 1990, is an IgG-mediated disease, characterized clinically by polymorphous eruption with prominent mucosal and acral involvement in the presence of a known or occult neoplasm. The clinical features overlap with erythema multiforme and lichen planus pemphigoides. Patients have severe mucosal erosions and polymorphous cutaneous signs including blisters, erosions, particularly on the upper body, and acral lesions. Mucosal lesions are typically present in the oral cavity, and also frequently found in the eye, anogenital region, upper digestive and respiratory tracts [1-3].

The occurrence of PNP in childhood has been reported infrequently. Unlike adult cases of PNP, where non-Hodgkin's lymphoma is the most commonly associated neoplasm, in children and adolescents this disease has a striking association with Castleman's disease.

Here we report an unusual case of childhood paraneoplastic pemphigus in association with benign mesocolon fibroma that responded to tumor excision dramatically.

Case Report

A 12 year old girl was referred to our dermatology clinic because of painful mucosal erosions from one month ago, made her unable to eat and drink. Genital mucosa was involved thereafter leading to dysuria. At the same time she experienced conjunctivitis. Also, she had mild dyspnea. The past medical history was unremarkable and there was no drug history. In the examination, she had widespread mucosal erosions in the oral and nasal mucosa with crust formation on the lips. She had vaginal, anal and conjunctival erosions (Figure 1 and Figure 2). There were periungual scaling and erythema in the upper and lower extremities. She had few bullae on the fingers and toes. Other physical examinations were normal except tenderness in lower abdominal area and non tender palpable lymph nodes in cervical region. Routine laboratory tests including cell blood count, liver function test, renal function and blood biochemistry were in normal limits. Abdominal sonography detected a solid pelvic mass that was confirmed in MRI as solid encapsulated tumoral lesion with marked heterogeneous enhancement suggestive of teratoma, dysgerminoma or neurogenic tumor. Stevense-Johnson, viral infection and pemphigus vulgaris were suspected. Skin biopsy and direct immunofluorscence was performed that were suggestive of paraneoplastic pemphigus and no finding was found in favor of others. (Figure 3-6) Serologic tests for specific autoantigens were not performed.

clinical-experimental-dermatology-hemorrhagic-crust

Figure 1: Perioral lesions, hemorrhagic crust on the lips and bilateral conjunctivitis.

clinical-experimental-dermatology-erosions-scaling

Figure 2: Periungual erosions and scaling.

clinical-experimental-dermatology-lichenoid-reaction

Figure 3: Over view, H & E , Widespread acantholysis and lichenoid reaction in dermoepidermal junction.

clinical-experimental-dermatology-dermoepidermal-junction

Figure 4: H & E, Acantholytic cells and infiltration in dermoepidermal junction.

clinical-experimental-dermatology-dyskeratotic-cells

Figure 5: Hydropic degeneration of basal layer and dyskeratotic cells in dermoepidermal junction.

clinical-experimental-dermatology-linear-deposition

Figure 6: DIF, Focal intercellular suprabasal deposition and linear deposition along dermoepidermal junction (IgG & C3).

Tumor markers were in normal range except CEA that was slightly raised. CT scan of thorax, abdomen and pelvis (other than the pelvic mass) was normal and oncologist did not find another source of malignant neoplasm. She was prescribed 30mg/day prednisolone and 50 mg/day azathioprine but she had poor response to treatment. The tumor was resected with gynecologist and surgeon consultations. Histopathologic examination of tumor was consistent with mesocolon inflammatory fibroma and all the malignant markers were negative in immunohistochemistry. The mucocutaneous lesions were improved significantly and no relapse or presentation of other malignancy was detected in 12 months follow up. Although acral lesion partially resolved, the response was not as good as mucosal lesion and chronic lichenoid dermatitis persisted over dorsal aspect of the hands.

Discussion

In PNP histology may show a range of features, including epidermal acantholysis, dyskeratosis with basal vacuolar changes, keratinocyte necrosis and exocytosis of inflammatory cells into the epidermis [1-4]. Immunofluorescence reveals typical binding of both IgG and C3 in a focal, intercellular epidermal pattern and linear granular pattern at the basement membrane zone. Immunoprecipitation and immunoblotting reveal several characteristic target antigens of molecular weights 250, 230, 210, 190 and 170 kDa corresponding to desmoplakin, the 230-kDa bullous pemphigoid (BP) antigen BP230, envoplakin, periplakin and transmembrane protein [5-9]. In addition,a pathogenic role has also been suggested for antidesmoglein (Dsg) antibodies [10].

The most commonly associated neoplasms are non-Hodgkin lymphoma (40%), chronic lymphocytic leukemia (30%), Castleman's disease (10%), malignant and benign thymomas (6%), sarcomas (6%) and Waldenstrom's macroglobulinemia (6%) [2,11]. There are reports of carcinomas of the lung, colon, hepatocellular, pancreas, and cervix [12-14]. In one case no underlying neoplasm was found over 8 years of follow-up [15]. The absence of common neoplasms is notable. Other triggers are radiotherapy, treatment with fludarabine and interferon-α [16,17].

In approximately one-third of patients, the underlying neoplasm is undiagnosed at the time the mucocutaneous disease develops. Patients with benign tumors, such as thymoma or localized Castleman's disease, should have the tumor surgically excised. The majority of these patients will either improve substantially or clear completely. However, it may take 6-18 months to see complete resolution of lesions after excision of a benign neoplasm [18].

PNP affects children and adolescents aged 8-18 years with no gender preference. Hispanic children appear to be more frequently affected. The key features of childhood and adolescent PNP are severe mucositis, specific association with B-cell lymphoproliferative disease, frequent respiratory involvement and a high fatality rate [19]. Castleman's disease is a rare lymphoproliferative disorder, characterized by a massive growth of lymphoid tissue, usually located in the mediastinum or retroperitoneum and is the most common neoplasm in children with PNP [20-22].

A case of PNP with lesions in the colon epithelium was reported in 2006 by Hiroshi MIIDA et.al. Levels of tumor markers CEA and CA19- 9 were elevated, abdominal CT and MRI revealed thick mesenterium that was not further investigated due to intervening complications. The biopsy specimen from the colon had similar histology to that associated with PNP [23]. We did not perform colonoscopy to assess colon epithelium. Association of PNP has been reported with inflammatory myofibroblastic tumors. They are typically composed of variable amounts of stromal and cellular elements, and are benign tumorlike lesions of unknown etiology that can occur at different anatomic sites and have variable non-specific clinical symptoms. Although myofibroblasts were not detected in histopatholgic examination, it is possible that our case would be associated with these tumors [24].

With few exceptions, PNP in patients with malignant neoplasms has generally proved to be fatal, with no relation between the course of the mucocutaneous syndrome and tumour activity. Mortality is frequently the result of a complication of immunosuppression [24] or gastrointestinal bleeding due to high dose of corticosteroids. Bronchiolitis obliterans frequently leads to respiratory failure and is the third cause of death in PNP [25]. Mean survival rate of the original group of cases reported by Anhalt was 9 months (with a maximum of 24 months).

Our case demonstrated an unusual one, firstly because of unique tumor association, secondly for a childhood PNP, that is rare and usually in the context of castleman's disease. Moreover, our case had good response to treatment although she had mild respiratory symptoms in favor of bronchiolitis obliterans. Although we did not perform serologic tests in this patient, clinical, histological and direct immunofluorsence findings were consistent with the diagnosis of PNP and the lesions improved significantly after resection of tumor.

Although our patient's lesions responded dramatically to tumor resection, we will follow the patient for possible existence of other proliferative diseases.

Acknowledgements

This project was funded by the Skin Research Centre, Shahid Beheshti University, M.C., Shohada-e-Tajrish Hospital. Nastaran Namazi had full access to all the data in this report and takes responsibility for the integrity of the data. Authors declare no financial interest in this manuscript and no affiliation (relationships) to disclose.

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Citation: Toosi P, Kani ZA, Qeisari M, Namazi N (2011) Paraneoplastic Pemphigus: An Unusual Neoplasm Association. J Clin Exp Dermatol Res 2:124.

Copyright: © 2011 Toosi P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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