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Case Report
2017:83:6;673-676
doi: 10.4103/ijdvl.IJDVL_874_16
PMID: 28799534

Cutaneous plasmacytosis: A rare entity with unique presentation

Subhra Dhar1 , Lalthleng Liani2 , Kamlakar Patole3 , Sandipan Dhar4
1 Kolkata Reference Laboratory, SRL Ltd., Aizol, Mizoram, India
2 Department of Dermatology and Venereology, Civil Hospital, Aizol, Mizoram, India
3 Clinical Reference Laboratory, SRL Ltd., Mumbai, Maharashtra, India
4 Department of Pediatric Dermatology, Institute of Child Health, Kolkata, West Bengal, India

Correspondence Address:
Subhra Dhar
Flat 9 C, Palazzo, 35, Panditia Road, Kolkata - 700 029, West Bengal
India
Published: 09-Aug-2017
How to cite this article:
Dhar S, Liani L, Patole K, Dhar S. Cutaneous plasmacytosis: A rare entity with unique presentation. Indian J Dermatol Venereol Leprol 2017;83:673-676
Copyright: (C)2017 Indian Journal of Dermatology, Venereology, and Leprology

Abstract

Primary cutaneous plasmacytosis is a rare cutaneous disorder with extensive cutaneous plaques/papules mainly on the trunk and face. Cases have mostly been documented from Japan. We present here a rare case of cutaneous plasmacytosis from India of Mongolian descent. This 50-year-old female from Mizoram had extensive maculo-papular violaceous plaques distributed on the face, axillae, trunk and lower extremities. Initial and repeat skin biopsy revealed dense perivascular and periadnexal mature plasma cells. She also had lymphadenopathy. Serum protein electrophoresis did not reveal any M band and the Bence Jones protein was negative in urine. The patient had multiple superficial lymph nodes and a biopsy from the cervical lymph node showed effacement of normal nodal architecture by sheets of plasma cells. Immuno histochemistry was done from both skin and lymph node biopsies. The kappa and lambda tight chains were not restricted; there by proving the polyclonal nature of the plasma cells. The novelty of the case lies in its classical clinical presentation with histopathological documentation.
Keywords: Immunohistochemistry, lymph node, Mongolian, plasmacytosis, primary cutaneous

Introduction

Primary cutaneous plasmacytosis is a rare cutaneous disorder with extensive cutaneous plaques/papules mainly on the trunk and face. This entity is thought to be a reactive process of unknown etiology.[1] The skin lesions may be associated with variable extracutaneous involvement.[2] Cases have mostly been documented from Japan.[3]

We present here a very rare case of cutaneous plasmacytosis from India in a 53- year- old female of Mongolian descent.

Case Report

A 50-year-old female from Mizoram (north-eastern part of India) and of Mongolian ethnicity presented with multiple violaceous plaque lesions of variable size and shapes all over the body, predominantly over trunk, face and neck. Examination revealed reddish brown to purple colored plaques of sizes varying from 3-6 cm in diameter. The shapes were varied, viz., circular, elongated, annular, aciform coalescing at places forming reticulated patches [Figure - 1]. Lesions were found predominantly over the trunk, face and neck [Figure - 2], axillae and back. No hepato splenomegaly was found. Patient was found to be anaemic. A skin biopsy was performed and initial blood tests were ordered. Her Hemoglobin was found to be 7.3 gm/dl and the ESR was 150/hr. Blood for HIV antibodies (1 and 2) were negative and VDRL was non reactive. The histopathology examination of the skin biopsy revealed the following: The epidermis was unremarkable. The dermis shows moderately dense aggregates of plasma cells in the superficial and deep perivascular areas [Figure - 3]. These were admixed with variable number of lymphocytes and histiocytes [Figure - 4].

Figure 1: Multiple violaceous coloured plaques of variable sizes and shapes over back
Figure 2: Violaceous plaques over face and neck in the same lady
Figure 3: Lymphoplasmacytic infiltrate in the dermis (H and E, ×100)
Figure 4: Abundant plasma cells and lymphocytes in dermal infiltrate (H and E, ×400)

A peripheral smear examined revealed extensive rouleaux formation. Other biochemical parameters were as follows - BUN: 26.8 mg/dl, Creatinine 3.4 mg/dl, total protein was 12.6 g/dl, albumin was 2.6 gm/dl, globulin was 10g/dl, total urinary protein was 15931 mg/dl, LDH was 361 U/L. Serum total IgG was 41 g/dl.

Serum protein electrophoresis did not reveal any M band and the Bence Jones protein was negative in urine.

The patient also had multiple superficial lymph nodes in the cervical, axillary and inguinal region. Biopsy from the cervical lymph node showed effacement of normal nodal architecture by sheets of plasma cells [Figure - 5].

Figure 5: Sheets of plasma cells in lymph node (H and E, ×400)

Immunohistochemistry was done for kappa and lambda light chains to rule out monoclonality of plasma cells from the lymph node biopsy. The kappa and lambda tight chains were not restricted, there by proving the polyclonal nature of the plasma cells [Figure - 6].

Figure 6

Discussion

Cutaneous and systemic plasmacytosis is a rare reactive lympho-plasmacytic disorder. It was first described in Asia by Yashiro in 1976 who described it as a type of plasmacytosis. Kitamura further characterised it in 1980. Since then it has been described in Asian patients, specially amongst the Japanese.[4] As most patients of cutaneous plasmacytosis are found to have some form of systemic symptoms,[5] some authors prefer the term “cutaneous and systemic plasmacytosis” to account for the extracutaneous involvement.[6]

The cutaneous plasma cell infiltrate are polyclonal and the most common extracutaneous involvement is lymphadenopathy.

Clinical manifestations include fever, anaemia and hypergammaglobulinaema. The cutaneous presentation is very characteristic comprising of multiple reddish-brown infiltrated macules, plaques and nodules, chiefly on the trunk.[2]

The etiopathogenesis is poorly understood. Dysregulated production of IL-6 which is a cytokine that induces B - cell proliferation and differentiation to plasma cells which in turn causes immunoglobulin secretion and angiogenesis is thought to play a role. Genetic polymorphism in the IL-6 gene may possibly explain the propensity of the disease to manifest in particular geographic regions.[7],[8]

Recently a similar case of primary cutaneous plasmacytosis has been reported from India.[9] We are not aware of any such case where Hidradenitis Suppurativa has been a manifestation of primary cutaneous plasmacytosis as reported in the case. This is to our mind, certainly an unusual manifestation.

Histologic features include a moderately dense infiltrate of mature plasma cells in perivascular areas of both superficial and deep dermis. Admixture of lymphocytes may be present and lymphoid follicles with reactive germinal centres can also be seen.

Light chain restriction is absent which goes with the polyclonal nature of the plasma cell infiltrate.[10]

Approximately 58% of cases of cutaneous plasmacytosis have associated lymphadenopathy which forms the commonest extracutaneous manifestation. Liver, spleen, lungs and kidney are less frequently affected organs.[1],[11] Our patient had no history of recurrent infections, chronic inflammatory disease or neoplasm and tested negative for autoimmune markers. Although creatinine was raised in our patient, the kidneys could not be assessed as the patient refused kidney biopsy.

Most cases of plasmacytosis run a benign indolent course without spontaneous remissions. There are reports of plasmacytosis developing malignant lymphoma. However the rate of transformation to malignant neoplasm is quite low in Asian literature.[2]

Cases are recalcitrant to treatment. Treatment modalities like topical and systemic steroid, antibiotics and systemic chemotherapy have shown to have some beneficial effects. Topical 0.1% tacrolimus, thalidomide, photodynamic therapy, combining corticosteoid with cyclophosphamide, topical PUVA, radiotherapy have been tried with variable outcome.[12]

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given her consent for her images and other clinical information to be reported in the journal. The patient understand that name and initials will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

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