Onychomycosis and Onychomatricoma

Abstract

Nail dermoscopy is helpful in the differential diagnosis of nail disorders including onychomycosis and pigmented and nonpigmented nail tumors. We report two cases of onychomatricoma with concurrent onychomycosis of the same digit. In both cases, dermoscopy of the nail plate exhibited features of onychomatricoma, whereas dermoscopy of the distal free edge revealed features of onychomycosis. It is not uncommon for patients with onychomatricoma to develop coexisting onychomycosis, as channels created by the tumor render the nail plate susceptible to invasion by fungi.

Nail clipping with onychomycosis and surprise clue to the diagnosis of nail unit melanoma

“…In contrast, subungual melanoma (SUM) is rare and often difficult to diagnose. Nail tumors, such as onychomatricoma and squamous cell carcinoma of the nail unit, are reported in association with onychomycosis, with cases of associated SUM reported only rarely . Nail clipping is a simple diagnostic technique primarily used in clinical practice to obtain evidence of an active fungal infection .…”

Imaging technique for the diagnosis of onychomatricoma

“…We found 19 articles that evaluated the dermoscopic features of onychomatricoma in 61 cases . As dermoscopic criteria for the diagnosis of onychomatricoma are not standardized, different studies did not always evaluate the same criteria.…”

“…In some cases, onychomatricoma has been diagnosed as onychomycosis and unsuccessfully treated . Notably, onychomatricoma can also occur in association with onychomycosis because the cavities created by the tumour make the nail plate susceptible to fungal invasion …”

“…8 Notably, onychomatricoma can also occur in association with onychomycosis because the cavities created by the tumour make the nail plate susceptible to fungal invasion. 11 As nail surgery is often a painful experience for the patient and sometimes leaves permanent scars on the nail plate, more accurate preoperative diagnosis is needed to make the correct diagnosis. 2 Imaging techniques can greatly help the differential diagnosis of nail lesions.…”

Pachyonychia of the toenail in a child

“…The fi rst case of OM in a child was reported in 2007 in combination with onychomycosis [ 13 ] ; it was supposed that OM may represent a predisposing factor for the development of onychomycosis [13][14][15] . The fi rst case of OM in a child was reported in 2007 in combination with onychomycosis [ 13 ] ; it was supposed that OM may represent a predisposing factor for the development of onychomycosis [13][14][15] .…”