Sonographic Findings of Ruptured Epidermal Inclusion Cysts in Superficial Soft Tissue

Jin, Wook; Ryu, Kyung Nam; Kim, Gou Young; Kim, Hyun Cheol; Lee, Jae Hoon; Park, Ji Seon

doi:10.7863/jum.2008.27.2.171

Cited by 53 publications

(63 citation statements)

References 12 publications

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“…[5][6][7][8][9] Conversely, highresolution sonography allows a detailed evaluation of the contents and cyst wall as well as adjacent subtle pericystic changes in the dermal and subcutaneous regions. 2,3,7,10,11 Our results showed that 62% of the epidermal cysts in the superficial soft tissue had the characteristic pseudotestis pattern on sonography. Particularly, intralesional bright echogenic reflectors and filiform anechoic areas within the "pseudotestis" could be delineated in 77% and 54% of cases, respectively.…”

Section: Discussionmentioning

confidence: 67%

“…3,10 In this study, the overall rupture rate was 40.5%, and the infection rate was 9.5%. Lee et al 3 reported that color Doppler signals were useful for diagnosing ruptured epidermal cysts.…”

Section: Discussionmentioning

confidence: 97%

“…2 An epidermal cyst frequently remains asymptomatic unless complicated by rupture or infection. 3,10 Malignant transformation into low-grade squamous cell carcinoma was reported in 72 of 3300 epidermal cysts. 1,15 In this study, none of our patients had a definite relevant surgical or trauma history accounting for formation of the epidermal cyst.…”

Section: Discussionmentioning

confidence: 99%

“…1-3,10,11 A congenital epidermal cyst may be formed by trapping of displaced embryonic epithelial rests, commonly occurring in the head and neck. 2,3,10 An acquired epidermal cyst results from occlusion of the pilosebaceous unit or implantation of viable epidermal cells in the dermis or subcutis. 2,5,14 Epidermal cysts are usually solitary, but multiple epidermal cysts can occur in patients with Gardner syndrome, particularly on the face and scalp.…”

Section: Discussionmentioning

confidence: 99%

“…[5][6][7][8][9] By virtue of the superb capability of sonography for depicting the details of superficial lesions, epidermal cysts may appear as hypoechoic to hyperechoic masses or complex lesions depending on the composition of the cyst. 3,10,11 Of note, scrotal epidermal cysts, which appear as welldefined ovoid masses with homogeneous low to medium echoes on sonography, mimicking polyorchidism, have been described. 12,13 However, extrapolation of this sonographic pattern, the so-called pseudotestis pattern, for diagnosing epidermal cysts in the superficial soft tissue has not been advocated.…”

mentioning

confidence: 99%

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Epidermal Cysts in the Superficial Soft Tissue

Huang

et al. 2011

Journal of Ultrasound in Medicine

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Objectives The purposes of this study were to report the sonographic features of superficial epidermal cysts with an emphasis on the characteristic pseudotestis appearance and to highlight the spectrum of ancillary findings. Methods The medical records and sonographic studies of all cases of surgically proven epidermal cysts (n = 42) from January 2005 through December 2009 were reviewed. Twenty‐six epidermal cysts (62%) that appeared on sonography as ovoid nodules with homogeneous low to medium echoes, simulating a testicle, were included in the pseudotestis group. The other 16 epidermal cysts (38%) without the pseudotestis pattern were included in the nonpseudotestis group. The age, sex, lesion size, length to width ratio, sonographic appearances, and frequencies of rupture and infection were compared between the groups. Results Epidermal cysts in the nonpseudotestis group presented as heterogeneously echoic or lobulated nodules or had a concentric ring or target appearance. There were no significant differences in the age, sex, lesion size, and length to width ratio between the groups. The pseudotestis group had significantly higher frequencies of intralesional bright echogenic reflectors and filiform anechoic areas than the nonpseudotestis group (P < .01). There were no significant differences in the associated ancillary sonographic features, including posterior acoustic enhancement, dermal attachment, focal dermal protrusion, and frequencies of rupture and infection between the groups. Conclusions In this study, two‐thirds of the superficial epidermal cysts had a characteristic pseudotestis pattern on sonography, whereas the others could be suspected by recognition of the ancillary sonographic findings, including dermal attachment and focal dermal protrusion or a distinctive concentric ring or target pattern.

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Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Epidermal Cysts in the Superficial Soft Tissue

Huang

et al. 2011

Journal of Ultrasound in Medicine

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Sonographic appearance of an eccrine spiradenoma: A case report

Kwon

Kim

Choi

et al. 2017

J of Clinical Ultrasound

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Eccrine spiradenoma is a rare, benign, adnexal skin tumor of the sweat gland, which may manifest in any part of the body. It is typically located in the dermal or the subcutaneous fat layer. Eccrine spiradenomas rarely progress to malignant transformation and only a few cases of malignant transformation have been reported. Due to its rarity, there have been few reports about the sonographic appearances of eccrine spiradenoma. We report the sonographic findings in one case of eccrine spiradenoma, located in the subcutaneous fat and the deep dermal layers of the upper arm in a middle-aged woman.

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Top Advances in Dermatologic Ultrasound

Wortsman

2022

J of Ultrasound Medicine

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The advances in dermatologic ultrasound have been significantly influenced by the development of high‐ and ultrahigh‐frequency probes, the provision of guidelines for performing the examinations, and a growing number of publications in the field. This review analyzes the most significant contributions that have impacted the daily practice of dermatologists in recent years. This includes the advances in anatomical detection and the patterns of benign and malignant cutaneous tumors, inflammatory dermatologic conditions, vascular anomalies, nail abnormalities, and aesthetic procedures. The knowledge of these advances is a primer for the operators of these examinations.

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Sonographic Findings of Ruptured Epidermal Inclusion Cysts in Superficial Soft Tissue

Abstract: A ruptured epidermal inclusion cyst visualized by sonography had variable shapes; the sonographic findings can be useful for obtaining a correct diagnosis of a ruptured epidermal inclusion cyst.

Cited by 53 publications

References 12 publications

Epidermal Cysts in the Superficial Soft Tissue

Epidermal Cysts in the Superficial Soft Tissue

Sonographic appearance of an eccrine spiradenoma: A case report

Top Advances in Dermatologic Ultrasound

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