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Polish Journal of Pathology
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Rhinoscleroma: a case report

Katarzyna Karpińska-Kaczmarczyk
,
Maria Chosia
,
Stanisław Woyke

Pol J Pathol 2010; 3: 166–168
Online publish date: 2011/01/03
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Introduction

Although rhinoscleroma is nowadays a very rare disease in Poland, a hundred years ago both Poland and the rest of Eastern Europe had the highest incidence of the illness. There are no epidemiological data on rhinoscleroma incidence in Poland. In France, there were 11 reported cases over a period of 15 years (1990-2005) [1]. Presently, it is endemic in some regions of Asia, Africa and South and Latin America. The endemic regions are characterized by common environmental factors, such as low level of hygiene, malnutrition and overcrowded housing. It most commonly affects young and middle age people, more often women than men [2, 3]. The clinical symptoms of rhinoscleroma of the upper respiratory tract were first presented by Ferdinand von Hebra in 1870. Six years later, Johann von Mikulicz described the microscopic picture of the disease [4]. The first description of ultrastructure of granulation tissue in rhinoscleroma was reported by S. Woyke et al. in 1969 [4]. In 1882, Anton von Frisch discovered Klebsiella rhinoscleromatis as the possible etiological factor of the disease [4-6]. Klebsiella rhinoscleromatis is Gram-negative, nonmotile bacteria, which is the subspecies of Klebsiella pneumoniae [1, 7]. The name of the disease can be derived from the Greek term skleroma and denotes a hard nodular change.

The inflammatory process usually starts in the nasal cavity and then it spreads on to nostrils, pharynx and larynx [3]. There are also cases of rhinoscleroma of the lower respiratory tract, maxillary sinuses, orbital cavity, lacrimal ducts and cervical lymph nodes [3, 8-10]. The diagnosis can be established on the basis of histopathological, bacteriological and genetic examinations [7]. The disease can be divided into three morphological stages: catarrhal/atrophic, granulomatous or proliferative and sclerotic. The disease is progressive in character. It starts with acute exudative inflammation of the nasal mucous membrane with serous or mucus secretion. At the second stage characteristic granulation tissue is seen with nodules in the nasal cavity, which clinically can imitate cancerous tumours. Deformities of the tip of the nose are sometimes observed. At the third stage inflammatory infiltrations are replaced by connective tissue with thick cicatricial strips. This leads to deformities of nostrils, which is reflected in the old vernacular names of the disease in Polish: syphilis of the nose, leprosy of the nose and Slavic leprosy [1-3, 5, 6, 9, 11].

The microscopic image is very characteristic of this uncommon inflammatory illness.

Case description

A 77-year-old woman was admitted to the Outpatient Laryngological Clinic with nasal atresia. Under examination, a nodule in the right nasal cavity was found, from which five biopsies (2–5 mm in diameter) were taken for histological examination. The specimens were stained with haematoxylin and eosine and PAS. Immunohistochemistry with CD68, CD138 and plasma-cell antibodies was used. Microscopically granulation tissue composed of large macrophages with light, foamy cytoplasm known as Mikulicz’s cells, plasma cells and lymphocytes was found. Plasma cells, more numerous than lymphocytes and Mikulicz’s cells, were evenly distributed with a slight tendency to accumulate around small blood vessels. Apart from that, plasmacytes with visible traits of hyaline degeneration in the form of Cornil cells and Russell bodies were seen (Fig. 1). Small neutrophil aggregates were also found mainly in the lumen and around small blood vessels. Glassy, eosinophilic ball-like bodies that can be seen in Cornil cells as well as Russell bodies released from broken cells can be related to containers of rough endoplasmic reticulum, that can be seen in the electron microscope. They are filled with electron thick substance [12]. The cytoplasm of Mikulicz’s cells contained PAS positive inclusion bodies, which corresponded to Klebsiella rhinoscleromatis (Fig. 2). CD 68 expression was seen in the cytoplasm of Mikulicz’s cells. Plasma cells revealed CD138 expression.

Discussion

In the development of rhinoscleroma granulation tissue immunological response plays the major role. Owing to the presence of polysaccharide cell wall, the bacteria effectively inactivate phagocytosis and induce chronic inflammatory process with formation of granulomatous tissue.

Clinical differential diagnosis of the second and third stages of rhinoscleroma involves all destructive lesions associated with granulomas and ulcer formation, including sarcoidosis, Wegener’s granulomatosis, leishmaniasis, tuberculosis, syphilis, fungal infections, leprosy, nasopalatine duct cyst, Rosai-Dorfman disease, intranasal narcotic abuse, lymphomas, basal cell carcinoma, verrucous carcinoma, metastatic renal cell carcinoma [5, 14, 15]. The differential histological diagnosis of the granulomatous stage of rhinoscleroma, which includes the case in question, involves tuberculosis, leprosy, malacoplakia, granular-cell tumour and renal cell carcinoma metastases. The presence of neutrophils and microabscess formation is not characteristic of either rhinoscleroma or leprosy and tuberculosis. They can be present in granulation during the course of rhinoscleroma, but they are not to be found in granulation tissue typical of tuberculosis, in which granulomas are formed by epithelioid cells and multinucleated giant cells with centrally localized caseous necrosis. Apart from this, mycobacteria may be confirmed by Ziehl-Neelsen stain [5]. Mikulicz’s cells are characteristic but not pathognomonic for rhinoscleroma, because similar macrophages are also found in leprosy and in non-specific reactions to toxins produced by various pathogens [2, 7-9]. In rhinoscleroma these cells are dispersed and they never form isolated aggregates [9]. They are macrophages with light foamy cytoplasm, sometimes with vacuoles 100m in diameter, with excentrically located cell nucleus. Using Warthin-Starry, PAS or Giemsa stain as well as in the ultrastructure [13] bacteria can be seen in their cytoplasm. A microscopic examination in leprosy reveals large aggregates of foamy macrophages containing lipids and conglomerates of leprosy mycobacteria (Virchow’s cells) [13]. If the cells have eosinophilic cytoplasm, granular-cell tumour should be taken into consideration in the differential diagnosis (tumour cells are S-100 protein positive). In malacoplakia which very rarely affects the nasal cavity, Michaelis-Gutmann bodies can be found. Small aggregations of Mikulicz’s cells can mimic clear cells that are seen in renal cell carcinoma, however tumour cells in renal cell carcinoma show keratin and vimentin expression and no CD68 expression.

References

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Address for correspondence

Katarzyna Karpińska-Kaczmarczyk MD

Zakład Patomorfologii,

Pomorski Uniwersytet Medyczny

ul. Unii Lubelskiej 1

71-252 Szczecin

e-mail: kkapr@pum.edu.pl
Copyright: © 2011 Polish Association of Pathologists and the Polish Branch of the International Academy of Pathology This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.
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