DLSO, distal lateral subungual
onychomycosis; DS0, distal subungual
Our patient presented with hyperhidrosis in palms and soles of the feet, pointed pits in palmoplantar keratoderma areas, and subungual
Individuals oftentimes ignore the most common sign of a subungual
melanoma or mistake it for a bruise or fungal infection.
She was treated with excision of the entire tumour through subungual
Glomus tumors, which usually show a subungual
location, are rarely found outside the finger; however, cases have been reported in the foot, ankle, knee, hip, thigh, thorax, sacrum, and coccyxtic (5).
Distal and lateral subungual
onychomycosis (DLSO), proximal subungual
onychomycosis (PSO), superficial onychomycosis (SO), endonyx onychomycosis, total dystrophic onychomycosis (TDO) and mixed onychomy-cosis.
Black nails can be caused by the pigment from pseudomonas infection and after subungual
haemorrhage following trauma.
Nail pitting was the most common form (72.3%) followed by onycholysis (48.3%), nail discolouration (29.4%), subungual
hyperkeratosis (12.6%), and total nail dystrophy (4.8%) (Table 1).
The following exclusion criteria were employed: any nail lesions that could be definitely diagnosed as onychomycosis, onycholysis, twenty-nail dystrophy, subungual
hemorrhage, or nail disease caused by lichen planus or psoriasis.
However, it was difficult to identify subungual
extension of the hyponychium because the patient's nails were short.
The following nail changes were recorded: pitting, crumbling, onycholysis, oil drop, subungual
hyperkeratosis, and splinter hemorrhage.
This explains why subungual
melanoma in the nail bed epithelium usually turns out to be amelanotic and consequently a diagnostic challenge (5).