MRI Findings of Subcutaneous Epidermal Cysts: Emphasis on the Presence of Rupture

Hong, Sung Hwan; Chung, Hye Won; Choi, Ja-Young; Lee, Kyung-Hun; Choi, Jihye; Kang, Heung Sik

doi:10.2214/ajr.05.0044

Cited by 107 publications

(110 citation statements)

References 20 publications

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“…13 Magarelli et al 9 reported that SE can be a useful method for evaluation of superficial soft-tissue lesions and that malignant lesions exhibit increased stiffness on SE. Likewise, our study revealed a different SE pattern between malignant tumour and benign tumour, including epidermoid tumour; malignant tumours showed a harder nature than did benign tumours (p , 0.05), but there was no significant difference in the SE pattern between epidermoid tumour and other benign tumours.…”

Section: Discussionmentioning

confidence: 99%

Strain elastography features of epidermoid tumours in superficial soft tissue: differences from other benign soft-tissue tumours and malignant tumours

Park¹,

Lee²,

Lee³

et al. 2015

BJR

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Section: Discussionmentioning

confidence: 99%

Strain elastography features of epidermoid tumours in superficial soft tissue: differences from other benign soft-tissue tumours and malignant tumours

Park¹,

Lee²,

Lee³

et al. 2015

BJR

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“…Epidermal cysts differ from clear fluid-filled epidermoid cysts in that they are pus-like infected cysts. These cysts are seen on MRI as variable (high to low or mixed) signal intensity lesions on T1-and T2-weighted images but are seen as mixed intensity lesions in more than 50% of cases on T1 and T2 images [11]. Most lesions are easily removed completely, but recurrences may occur if complete removal is not achieved.…”

Section: Discussionmentioning

confidence: 99%

A study of 77 cases of surgically excised scalp and skull masses in pediatric patients

Yoon

Park

2007

Childs Nerv Syst

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Objectives Most cases of pediatric scalp and skull masses are either congenital or developmental tumors or diseases, and in many patients, these lesions are accompanied by intracranial extension. Past studies pertaining to these conditions are few, and thus clinical information is as yet inadequate. Materials and methods The authors present 75 pediatric patients with 77 cases of surgically treated scalp and skull masses. The most common pathologic condition was Langerhans cell histiocytosis, followed by epidermal cysts, epidermoid and dermoids, scalp hemangiomas, and neurofibromas, in descending order. Intracranial extension was observed in three cases (4%); two cases were malignant tumors that were skull metastasis of a neuroblastoma and a lymphoma, and one case was encephalocele. Lesions followed up because of possible recurrence were 15 cases of Langerhans cell histiocytosis, eight cases of epidermoid and dermoids, two cases of malignant tumors, and one case each of desmoplastic fibroma, myxoma, fibroid dysplasia, and neurofibroma, totaling 29 cases (39%). Conclusion Although the overall incidence of intracranial extension of pediatric scalp and skull masses is very low and the presence of a malignant tumor or metastatic tumor presenting as a scalp and skull mass is rare, such masses enlarge as time progresses, and there exists a possibility of recurrent disease. Therefore, it is suggested that early surgical resection will afford favorable prognosis for the patients, and meticulous follow-up is necessary in some conditions.

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“…[12] Such cysts are observed as homogeneous, T 1 hypointense, and T 2 hyperintense lesions with regular margin. [13] Some authors recommend ultrasonography (USS) for preoperative evaluation; [14] however, we do not prefer USS since it depends on the performer and does not provide much information except cysticsolid differentiation. Dutta et al [5] recommended preoperative free needle aspiration cytology (FNAC) and computed tomography (CT) in the cases with atypical presentation, if necessary, in a study published for epidermoid cysts of head and neck.…”

Section: Discussionmentioning

confidence: 99%

Epidermoid cysts localized on extremities

Beytemür

Yüksel

2018

Eklem Hastalik Cerrahisi

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Epidermoid cysts are also called inclusion cysts, epidermal inclusion cysts, epithelial cysts, keratin cysts, implantation cysts or traumatic or post-traumatic epidermoid inclusion cysts. All these cysts include an epidermal layer with keratin. Epidermoid cysts are benign lesions which include a cystic space with keratin and formations of three germinal layers and connected with the upper skin.[1] They are detected in the soft tissue in general and located subcutaneously ( Figure 1); however, they may present intratendinous, subungual or intraosseous localizations.[2] These cysts appear through invagination of keratinized squamous epithelium into deeper tissues because of trauma or ÖZ Amaç: Bu çalışmada ekstremite yerleşimli epidermoid kistlerin insidansı, anatomik yerleşimi, travmayla ilişkisi, tedavi komplikasyonları, tedavi sonrası nüks oranları ve nüksü etkileyen faktörler araştırıldı. Hastalar ve yöntemler: Çalışmada Ocak 2012 -Haziran 2017 tarihleri arasında ekstremite yerleşimli epidermoid kist tanısı konmuş ve bu nedenle ameliyat geçirmiş 120 hasta (76 erkek, 44 kadın; ort. yaş 41.8 yıl; dağılım 9-76 yıl) retrospektif olarak değerlendirildi. Hastaların yaşı, cinsiyeti, kistin yerleşim yeri, anatomik yerleşimi, yakınma süresi ve travma öyküsü ile beraber ameliyat sırasında kist üzerinde kütanöz adacık bırakılıp bırakılmadığı ve kist rüptürü olup olmadığı, nüks oranları ve nüks oranlarının bu parametrelerle ilişkisi araştırıldı. Bulgular: Nüks olan ve olmayan hastalarda; yaş, cinsiyet dağılımı, kistin büyüklüğü ve yerleşim yeri açısından istatistiksel olarak anlamlı farklılık yoktu (p>0.05). Ameliyat sırası kütanöz adacık bırakılan hastalarda nüks oranları anlamlı olarak daha düşüktü (p<0.05). Ameliyat sırası kist rüptürü meydana gelen hastalarda nüks oranları anlamlı olarak daha yüksekti (p<0.05). Nüks ve travma öyküsü arasında anlamlı ilişki yoktu (p>0.05). Ameliyat sırası kist rüptürü oranları kütanöz adacık bırakılan hastalarda anlamlı olarak daha düşüktü (p<0.05). Sonuç: Epidermoid kistler en sık elde yerleşimlidir. Farklı boyut ve karakterlerde, atipik yerleşimli de olabilir. Ameliyat sonrası olası komplikasyonları ve nüks oranlarını azaltmak için kistin sınırlarını ve özelliklerini iyi tanımlamak ve kisti kütanöz adacıkla beraber eksize ederken ameliyat sırası rüptürden kaçınmak gerekir.Anahtar sözcükler: Epidermoid kist; ekstremite; nüks. ABSTRACT Objectives:This study aims to investigate the incidence, anatomic localization, relationship to trauma, treatment complications, relapse ratios after treatment, and factors affecting relapse of epidermoid cysts localized on the extremities. Patients and methods:The study evaluated retrospectively 120 patients (76 males, 44 females; mean age 41.8 years; range 9 to 76 years) diagnosed with and operated due to epidermoid cyst localized on the extremities between January 2012 and June 2017. Patients' age, gender, cyst's localization, anatomic localization, complaint duration, and trauma history were investigated as well as whether a cutaneous islet was left o...

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MRI Findings of Subcutaneous Epidermal Cysts: Emphasis on the Presence of Rupture

Cited by 107 publications

References 20 publications

Strain elastography features of epidermoid tumours in superficial soft tissue: differences from other benign soft-tissue tumours and malignant tumours

Strain elastography features of epidermoid tumours in superficial soft tissue: differences from other benign soft-tissue tumours and malignant tumours

A study of 77 cases of surgically excised scalp and skull masses in pediatric patients

Epidermoid cysts localized on extremities

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