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Pilomatricoma

Reviewed 06/2019
 


BASICS

DESCRIPTION

  • Benign, adnexal skin tumor derived from hair matrix cells

  • Slow-growing, hard, typically solitary nodule found in the dermis/subcutaneous layer of the skin

  • Most commonly occurs on the h...

DIAGNOSIS

HISTORY

  • Usually asymptomatic

  • Some patients may complain of mild tenderness or pain secondary to palpation, pruritus, or inflammation.

PHYSICAL EXAM

  • Most frequently located on the head and neck (...

TREATMENT

  • Treatment of choice is simple excision with minimal margins.

  • Pilomatricomas do not spontaneously regress; however, perforating pilomatricomas may extrude spontaneously.

  • Skin grafts may be nece...

ONGOING CARE

COMPLICATIONS

Recurrence is rare (0.48–6%) and usually due to incomplete excision. 

REFERENCES

1
Hills SE, Maddalozzo J. Congenital lesions of epithelial origin. Otolaryngol Clin North Am.  2015;48(1):209–223. [View Abstract on OvidMedline]
2
Pant I, Joshi SC, Kaur G, et al. Piloma...

ADDITIONAL READING

  • Barreto-Chang OL, Gorell ES, Yamaguma MA, et al. Diagnosis of pilomatricoma using an otoscope. Pediatr Dermatol.  2010;27(5):554–557. [View Abstract on OvidMedline]

  • O’Connor N, ...

CODES

ICD10

  • D23.9 Other benign neoplasm of skin, unspecified

  • D23.30 Other benign neoplasm of skin of unspecified part of face

  • D23.4 Other benign neoplasm of skin of scalp and neck

  • D23.39 Other benign neop...

CLINICAL PEARLS

  • Pilomatricoma is a benign, relatively infrequent, slow-growing, adnexal skin tumor.

  • Most frequently reported in children and young adults

  • Typically appears as a solitary, firm, asymptoma...

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