Piersiala Krzysztof, Klimza Hanna, Jackowska Joanna, Wierzbicka Małgorzata
Department of Otolaryngology, Head and Neck Surgery, Poznań University of Medical Sciences, Poznań, Poland.
SAGE Open Med Case Rep. 2017 Dec 17;5:2050313X17749083. doi: 10.1177/2050313X17749083. eCollection 2017.
Cholesteatoma is a pathological tissue that may extend into all parts of temporal bone and rarely, as this study highlights, beyond its structures. Nevertheless, the spread outside the mastoid tip into the soft tissues of the neck or parotid space is very rare. The case of 23-year-old male with right parotid mass is presented. The patient had history (2006, 2009, and 2012) of three tympanoplastics for recurrent right ear cholesteatoma. The parotid tumor was revealed incidentally in magnetic resonance imaging in January 2016, but the imaging was inconclusive. After 6 months, the patient developed right-sided facial nerve palsy. The second look of the right ear was performed with simultaneous parotid surgery. The ear was healed and free of cholesteatoma, but the parotid mass resembled the cholesteatoma confirmed later on by histological examination. The tumor extended from stylomastoid foramen. This case was unusual as the disease had extended beyond the ear with the bony parts of the mastoid being preserved. To our knowledge, this is the first case report to describe a parotid gland cholesteatoma not being an extension of a cholesteatoma present in the tympanic cavity and entering the parotid gland via stylomastoid foramen.
胆脂瘤是一种病理性组织，可延伸至颞骨的所有部位，而且正如本研究所强调的，很少会超出其结构范围。然而，胆脂瘤从乳突尖外侧蔓延至颈部软组织或腮腺间隙的情况非常罕见。本文报告了一例23岁男性右腮腺肿物的病例。该患者曾于2006年、2009年和2012年因复发性右耳胆脂瘤接受过三次鼓室成形术。2016年1月，在磁共振成像检查中偶然发现了腮腺肿瘤，但成像结果不明确。6个月后，患者出现右侧面神经麻痹。遂对右耳进行二次探查，并同时进行腮腺手术。耳部愈合且无胆脂瘤残留，但腮腺肿物经组织学检查证实类似胆脂瘤。肿瘤起源于茎乳孔。该病例不同寻常之处在于病变超出耳部范围，而乳突的骨质部分得以保留。据我们所知，这是首例报告的腮腺胆脂瘤并非源于鼓室胆脂瘤并经茎乳孔延伸至腮腺的病例。
