Giant Trichilemmal Cyst of the Submental Region

Dündar, Mehmet; Varsak, Yasin Kürşad; Kozacıoğlu, Sümeyye; Arbağ, Hamdi

doi:10.1097/scs.0000000000001068

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…Both appear as smooth, oval, and intradermal bulges. In this study, TCs were more common in females, while ECs were more common in males, which is consistent with previous studies 17 . For anatomical location, TCs tended to occur in areas with dense hair distribution, whereas ECs tended to occur in non‐hair areas in our study.…”

Section: Discussionsupporting

confidence: 92%

The Value of Ultrasound for Differentiating Trichilemmal Cysts From Epidermoid Cysts

Ren

Wang

et al. 2023

J of Ultrasound Medicine

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ObjectivesThis study was aimed to evaluate the diagnostic performance of ultrasound (US) in differentiating trichilemmal cysts (TCs) from epidermoid cysts (ECs).MethodsBased on clinical and ultrasound features, a prediction model was established and validated. 164 cysts in the pilot cohort and another 69 in the validation cohort diagnosed with TCs or ECs histopathologically were evaluated. The same radiologist performed all ultrasound examinations.ResultsFor clinic features, TCs tended to occur in females compared with ECs (66.7 vs 28.5%; P < .001). In addition, TCs were prone to occur in the hairy area compared with ECs (77.8 vs 13.1%; P < .001). For ultrasound features, the internal hyperechogenicity and cystic change were more likely to appear in TCs in comparison with ECs (92.6 vs 25.5%; P < .001; 70.4 vs 23.4%; P < .001, respectively). Upon the features mentioned above, a prediction model was established with the areas under the receiver operating characteristic curves of 0.936 and 0.864 in the pilot and validation cohorts, respectively.ConclusionsUS is promising for differentiating TCs from ECs and is valuable for their clinical management.

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Section: Discussionsupporting

confidence: 92%

The Value of Ultrasound for Differentiating Trichilemmal Cysts From Epidermoid Cysts

Ren

Wang

et al. 2023

J of Ultrasound Medicine

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“…Although there are no comprehensive epidemiological data on tumor size, there have been few reports of TCs as large as that in the present case. In two previous reports of giant TCs, the diameter increased to 70 mm in 4 years and 60 mm in 30 years 12,13) . Although there are many reports of cases of rapid enlargement in PTTs, the enlargement of a TC to 90 mm in diameter within 5 years, as in the present case, is considered relatively rapid and unusual.…”

Section: Discussionmentioning

confidence: 67%

A Case of a Giant Trichilemmal Cyst on the Forehead

Takamura¹,

Amo²,

Yusa

et al. 2024

JPRS

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Trichilemmal cysts are the most common benign subcutaneous cysts on the scalp. Approximately 90% of trichilemmal cysts appear on the scalp and have trichilemmal keratinization without a granular layer visible on pathological examination. In addition, proliferating trichilemmal tumors, which occur in 2% of trichilemmal cysts, show local recurrence and ulceration, making them highly locally aggressive and requiring careful differentiation. We report the case of a 56-year-old man with a giant trichilemmal cyst on his forehead. After computed tomography and magnetic resonance imaging, a subcutaneous cyst was suspected and excised, and a pathological diagnosis of trichilemmal cyst was established. This was a rare case as the trichilemmal cyst was not located on the scalp, the most common site, but on the forehead area, and it was exceedingly large, with a maximum diameter of 9 cm.

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“…It is a benign skin lesion originating from the outer hair root sheath, with low incidence and few reports. [ 1 , 2 ] A case of TC was diagnosed and treated in our department, and the report is as follows.…”

Section: Introductionmentioning

confidence: 99%

Scalp trichilemmal cyst: A case report

Zhu

Yang

et al. 2023

Medicine

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Rationale: Trichilemmal cyst (TC), also known as trichodermal cyst, trichodermal isthmus-degenerative cyst. It is a benign skin lesion originating from the outer hair root sheath, with low incidence and few reports. Patient concerns: A 41-year-old patient had found a scalp lump for more than 10 years. A 2.0 cm × 1.0 cm × 1.0 cm lump on the right occipital region was touched more than 10 years ago without special treatment. In the past 2 years, the lump has gradually increased. Physical examination: 4 protruding lumps can be reached in the scalp. One lump in the right occipital region is about 3.0 cm × 2.0 cm × 2.0 cm, with 1 lump immediately below and 2 lumps in the left temporal region. All lumps can be pushed. Diagnoses: The lesion is located in dermis, The lesion is solid, and the contents of the cyst were cheese-like white material, and the inner and outer walls of the cyst were smooth and shiny. Pathological results showed that the lesion was TC. The cyst wall is epidermal tissue, the spinous layer and basal layer are intact, there is no granular layer, and the protein in the cyst is dense. Interventions: All lumps were completely surgically removed. Outcomes: The wound healed well after TC resection. There was no recurrence of TC after 1 year follow-up. Lessons: The clinical manifestations of scalp TC are not specific, and the diagnosis needs pathological examination, and the prognosis of total excision is good.

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Giant Trichilemmal Cyst of the Submental Region

Cited by 3 publications

References 12 publications

The Value of Ultrasound for Differentiating Trichilemmal Cysts From Epidermoid Cysts

The Value of Ultrasound for Differentiating Trichilemmal Cysts From Epidermoid Cysts

A Case of a Giant Trichilemmal Cyst on the Forehead

Scalp trichilemmal cyst: A case report

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