White Sponge Nevus: A Non-hereditery Presentation M.Seda Altop 1 , - PDF document

Case Report International Journal of Basic and Clinical Studies (IJBCS) 2014;3(2): 106-110 Altop MS et al. White Sponge Nevus: A Non-hereditery Presentation M.Seda Altop 1 , Ozge Ozdal 2 , C.Berk Ozer 2 , Meral Unur 3 Sule Ozturk Sarı 4 , Nesimi Buyukbabani 5 1 , Assist. Prof.Dr.Biruni University, Faculty of Dentistry, Dept of Oral and Maxillofacial Surgery 2 Student in PhD. Istanbul University, Faculty of Dentistry, Dept of Oral and Maxillofacial Surgery 3 Prof.Dr. Istanbul University, Faculty of Dentistry, Dept of Oral and Maxillofacial Surgery 4 Dr, Istanbul University, Medical Faculty, Dept of Pathology 5 Prof.Dr. Istanbul University, Medical Faculty, Dept of Pathology Abstract White sponge nevus is a rare, autosomal-dominant disorder that affects the uncornified stratified squamous epithelia. Clinically, the presence of white, spongy plaques mostly in the buccal, labial, and gingival mucosa and the floor of the mouth characterize the lesions. The differential diagnosis of the lesion may be difficult and it is best diagnosed by biopsy. No standard treatment for the condition exists although numerous treatments have been tried. We report a case of white sponge nevus in the oral cavity of a 28-year-old man and review of the literature. Keywords: Dyskeratosis, white lesion, white sponge nevus Introduction condition, should be established because other White sponge nevus (WSN) is an uncommon possible ‘‘white’’ lesions could have disease that Hyde first described in 1909, but malignant potential. The histological findings Cannon coined the term in 1935. This entity is are characteristic but not pathognomonic. also known by other names: Cannon’s Histopathologic features of WSN include disease, familial white folded dysplasia, epithelial thickening, hyperparakeratosis, and hereditary leukokeratosis, white vacuolization of the keratinocytes in the gingivostomatitis, and exfoliative leukoedema suprabasal layers. In addition, compact (1-2). cytokeratin (CK) aggregates are visible in the WSN is a rare pathology with a genetic based upper epithelial layers, such as those found in pathogenesis, a benign course and a epidermal disorders associated with CK localization affecting the mucosal defects (4-5). membranes. The disorder may be detected in WSN typically affects several individuals in a early childhood. same family, further confirming its autosomal Lesions are easily recognized and clinically domi- nant transmission (6-7). valuable: they appear as bilateral white We herein present a case of WSN of the oral spongy plaques, typically found on the cheek cavity in a patient with no history of familial mucosa, and the patients dont complain about involvement. pain (3). Mucosal alteration usually affects Case report oral soft tissues, but it sometime involves A 28-year-old man presented with a 20 year vaginal and rectal mucosa (2). history of asymptomatic, white, folded, soft, Correct diagnosis of WSN, which is a benign diffuse plaques bilaterally on his cheek, labial 106

Case Report International Journal of Basic and Clinical Studies (IJBCS) 2014;3(2): 106-110 Altop MS et al. mucosa and lateral surfaces of his tongue. patient. Blood analysis and salivary flow rate Lesions could not be removed. The margins showed no anomalies. The saliva analysis were well defined, and no lymph nodes were didn’t show the presence of Candida albicans palpable. Oral hygiene was adequate and oral or other fungal infectious agents. Based on examination was normal. Lesions never clinical and histopathologic findings, the changed despite numerous interventions such lesion was consistent with WSN. Patient’s as vitamin A and antibiotic therapy. The saliva was examined in diagnostic oral patient doesn’t smoke and rarely consumed microbiology laboratory: the analysis alcohol. He had seen a dentist who referred revealed the presence of Staphylococus him to our Oral Medicine and Surgery Clinic. aureus. He was told he had leukoplakia or oral cancer. In the following days 2 daily rinses with There was no smilar oral lesions in any other mouthwash containing chlorhexidine family members. No lesions in other body digluconate at 0,2% was prescribed in order sites were reported. A punch biopsy was to decrease the bacteria. After one month, obtained from his buccal mucosa. mild improvement was observed in the Histopathologic evaluation revealed an, oral lesions. Six-month follow-up was mucosa covered by stratified squamous recommended. epithelium with prominent hyperparakeratosis Figure 1. A: shows the histopathologic and marked acanthosis. Cytoplasmic clearing wiew of the lesion: marked epithelial of the keratinocytes was detected. Underlying thickening with spongiosis (HEx100). B, C: connective tissue was normal in appearance show the clear cell change and characteristic with rare chronic inflammatory cells. The perinuclear condensation of keratin lesions were painless. Un-esthetic appearance (HEX400). Figure 2. A,B,C,D,E show the of the mucosa was the only complaint of the clinical pictures of the patient. Figure 1. A: Histopathologic wiew of the lesion: marked epithelial thickening with spongiosis (HEx100). B, C: show the clear cell change and characteristic perinuclear condensation of keratin (HEX400) 107

Case Report International Journal of Basic and Clinical Studies (IJBCS) 2014;3(2): 106-110 Altop MS et al. Figure 2. A,B,C,D,E show the clinical pictures of the patient. Discussion as leukoedema, linea alba, bitten mucosa, WSN is considered a rare disorder, affecting dyskeratosis congenita (DKC), pachyonychia one in 200,000 people (8). The onset is congenita focal epithelial hyperplasia (Heck usually during early infancy, often before 20 disease), systemic lupus erythematosus years, and there is no gender predilection (2). (SLE), vegetative pioestomatitis, proliferative Some authors claim that the condition is verrucous leukoplakia (PVL), oral florid related to mutations in K4 and K13 genes, papillomatosis, mucosal syphilis (mucous characterized by defects in the maturation and plaques), candidiasis, leukoplakia, frictional desquamation of epithelial cells (9-10). keratosis, and even squamous cell carcinoma Lesions usually occur with significant (13). However, the most challenging predilection for the cheek mucosa, followed differantial diagnosis of WSN is oral lichen by the ventral surface of the tongue, labial planus (especially the reticular and plaque mucosa, the alveolar ridge and floor of the variants), since both diseases show mouth (11). As seen in our patient the absence predilection for the cheek mucosa and usually of pain is an important clinical feature in present bilaterally (14). In our case, lesions these patients (12). general view was the primary factor for Other conditions presenting as white lesions approaching the diagnosis as well as the on the oral mucosa was taken into account in patients age. It is known that lichen planus the differantial diagnosis. These include lesions are observed later in life between the genodermatoses and acquired conditions such 4th and 6th decades (15). 108