Onychomatricoma mimicking subungual melanoma and Bowen’s disease

Kuriyama, Yuko; Shimizu, Akira; Tamura, Atsushi; Motegi, Sei‐ichiro

doi:10.1002/cia2.12205

Cited by 2 publications

(4 citation statements)

References 7 publications

(10 reference statements)

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“…Pigmented onychomatricoma was first reported by Fayol et al [10] in 3 cases. A total of 14 cases have been reported till date (Table 1) [10][11][12][13][14][15][16][17][18]. The average age at presentation is 47.8 years (24-67 years) which is slightly lower than that of onychomatricoma in general (51 years).…”

Section: Discussionmentioning

confidence: 99%

“…However, in cases with malignancy including ungual melanoma, pigmented ungual Bowen's disease, or squamous cell carcinoma, the nail plate is either destroyed or is normal in thickness, while the nail bed may show ulceration or hyperkeratosis. Onychoscopy can provide valuable clues in such cases, though histopathological examination of the nail matrix and nail plate is important for diagnosis [12][13][14][15][16][17]21].…”

Section: Discussionmentioning

confidence: 99%

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Pigmented Onychomatricoma Presenting as Pachymelanonychia Striata: A Case Report and Review of Literature

Grover,

Gaurav,

Sharma

et al. 2023

Skin Appendage Disord

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Introduction: Onychomatricoma is a fibroepithelial tumor derived from the nail matrix and onychodermis. Many clinical and histological variants have been described. Pigmented onychomatricoma is a rare variant which presents as longitudinal pachymelanonychia. Case Presentation: We report the details of a 41-year-old female who presented with blackening and thickening involving more than half of the left middle fingernail for the past 10 years. Dorsal plate onychoscopy revealed longitudinal parallel white, gray, and black bands, while onychoscopy of the distal free edge demonstrated a thickened nail plate with “wood worm” cavities. The histopathological examination of the excised tumor revealed a pigmented onychomatricoma. Conclusions: Onychomatricoma is one of the nail tumors presenting as pachyonychia striata apart from onychocytic matricoma and onychocytic carcinoma. A pigmented onychomatricoma may closely mimic fungal melanonychia, pigmented onychopapilloma, pigmented ungual Bowen’s disease, and ungual melanoma. Noninvasive techniques like onychoscopy and imaging studies like ultrasonography and magnetic resonance imaging are helpful in differentiating it from pigmented ungual Bowen’s disease and ungual melanoma, even though diagnostic confirmation requires an excisional biopsy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Pigmented Onychomatricoma Presenting as Pachymelanonychia Striata: A Case Report and Review of Literature

Grover,

Gaurav,

Sharma

et al. 2023

Skin Appendage Disord

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show abstract

“…The spindle cells were positive for CD34 (Figure 1g), which was consistent with features of OM. 2,3 Based on the clinical and pathological findings, [1][2][3] the patient was diagnosed with POM. Some cases of POM that clinically mimic nail unit melanoma and Bowen's disease have been reported.…”

mentioning

confidence: 99%

“…Some cases of POM that clinically mimic nail unit melanoma and Bowen's disease have been reported. 2,3 Moreover, regarding dermoscopic findings in OM, splinter hemorrhages and nail plate thickening are observed in ungual squamous cell carcinoma and onychopapilloma. 1 In contrast, parallel white lines seem to be specific for OM.…”

mentioning

confidence: 99%