Proliferating Pilar Tumor of the Scalp

Bronfenbrener, Roman; Regan, Thomas D; Lawrence, Naomi

doi:10.1111/j.1524-4725.2012.02437.x

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…These arise from the outer root sheath of hair follicles and can also arise within a preexisting hair cyst. 1,2 It mainly affects women between 40 and 80 years old, with a peak of incidence during the sixth decade of life. The scalp is the most affected area (90%); however, it can also affect the forehead, neck, mammary region, and vulva.…”

Section: Discussionmentioning

confidence: 99%

“…The size of the tumor varies from 2 to 15 cm, but some cases can reach 24 cm. 1,2 The proliferating pilar tumor is a neoformation with a cystic or nodular appearance, it can also be present as an alopecic or ulcerated lesion; slow growth, soft and asymptomatic consistency. 2,3 They can be developed from a pilar cyst, caused by trauma or inflammation that predisposes to atypical differentiation and cell proliferation, or it can be de novo from the outer root sheath of the follicular isthmus.…”

Section: Discussionmentioning

confidence: 99%

“…1,2 The proliferating pilar tumor is a neoformation with a cystic or nodular appearance, it can also be present as an alopecic or ulcerated lesion; slow growth, soft and asymptomatic consistency. 2,3 They can be developed from a pilar cyst, caused by trauma or inflammation that predisposes to atypical differentiation and cell proliferation, or it can be de novo from the outer root sheath of the follicular isthmus. 4 Ye and colleagues 5 proposed a classification system according to histological characteristics: benign, low-grade malignant and high-grade malignant (Table 1).…”

Section: Discussionmentioning

confidence: 99%

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Proliferating Pilar Tumors in the Scalp Over a Period of 23 Years in a General Hospital in Mexico City

Juan David,

María de los Ángeles,

Claudia Ileana

et al. 2023

Dermatol Surg

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BACKGROUND Proliferating pilar tumors are an unusual skin tumor, and they have a cystic component with trichilemmal keratinization and epithelial proliferation. These arise from the outer root sheath of hair follicles. It mainly affects women. The scalp is the most affected area. Diagnosis can be made by biopsy. Surgical excision is the best treatment option. OBJECTIVE Report the frequency of proliferating pilar tumors in the scalp in general hospital in Mexico over a period of 23 years. METHODS The authors reviewed the database of the dermatopathology service of the General Hospital "Dr Manuel Gea González" from 1999 to August 2022, selecting diagnosticated cases of proliferating pilar tumor, pilar cyst, trichilemmal cyst, or proliferating trichilemmal cyst in the scalp. RESULTS The authors discovered 17 cases, 13 were women, the average age was 54.9 years, all the tumors affecting the scalp, and just 3 cases were reported as malignant. CONCLUSION In comparison with the existing data, the authors can observe that most of their patients were women and the scalp is the most affected area. Most did not present associated symptoms. As the authors can see, most are benign and long-lasting: however, the authors cannot ignore that a small percentage can be malignant.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Proliferating Pilar Tumors in the Scalp Over a Period of 23 Years in a General Hospital in Mexico City

Juan David,

María de los Ángeles,

Claudia Ileana

et al. 2023

Dermatol Surg

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“…Calcifications and focal necrosis can be found. Immunohistochemistry typically shows positive staining for AE13 and AE14 [3].…”

Section: Discussionmentioning

confidence: 99%

Polylobulated Scalp Nodule with Heterogeneous Cystic Ultrasound Signs

Pinto-Pulido

Lario

González‐Cañete

et al. 2021

Skin Appendage Disord

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Epidermoid cyst: An esthetic challenge, if neglected—A comprehensive analysis of 217 cases

Singh

Phulware

Baishya

et al. 2023

JCAS

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Background: An epidermoid cyst is a benign keratin-filled cyst, commonly located in the face, scalp, neck, and trunk. Although it is a common benign cystic neoplasm, large series of analyses in English literature are still scarce. To comprehend the clinical and pathological variation of epidermoid cysts in the sub-Himalayan region of India, as well as their clinical implications for late diagnosis, a retrospective study on epidermoid cysts was conducted. Materials and Methods: This was a retrospective observational study conducted on 217 cases of epidermoid cyst subjected for fine-needle aspiration cytology over a period of 3.6 years (from 2018 to 2021). The clinical details and other epidemiological data were archived from the pathology requisition forms. Results: It showed slight male preponderance with head and neck site as the most common area. Most patients were adults. Few uncommon sites were also seen namely breast, parotid, epididymis, and tonsils. Few large lesions were identified measuring up to 10 cm. The skin changes were seen in 5.5% cases, 0.9% cases show extreme ulceration, and 4.1% cases show foreign body giant cell reactions. Due to the province’s steep terrain and limited access to medical services, the majority of patients arrived at out patient department (OPD) late. Conclusion: The findings suggest that fine-needle aspiration can be used as a quick diagnostic test even in remote areas by the general practitioner who can send the slides for evaluation to a pathologist. Many times, clinically looking epidermoid cyst can reveal certain challenging entities such as a biphasic fibroepithelial tumor with cystic squamous metaplasia and proliferating pilar tumor in our series. The study of this lesion is also needed for early diagnosis as long-standing lesion may rupture and cause requirement of extensive treatment followed cosmetic impairment.

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Proliferating Pilar Tumor of the Scalp

Cited by 3 publications

References 5 publications

Proliferating Pilar Tumors in the Scalp Over a Period of 23 Years in a General Hospital in Mexico City

Proliferating Pilar Tumors in the Scalp Over a Period of 23 Years in a General Hospital in Mexico City

Polylobulated Scalp Nodule with Heterogeneous Cystic Ultrasound Signs

Epidermoid cyst: An esthetic challenge, if neglected—A comprehensive analysis of 217 cases

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