9th July 2023

Types

Clinical presentation depends on the type of melanoma (see table 3). Rarer forms include amelanotic, mucosal and ocular.

Type	Description/Site	Details
Superficial spreading	Discoloured patch, variable colours, irregular shape Males – torso, Females – legs	Most common type Predominantly horizontal growth May thicken over time
Nodular	Dark brown/red papule/nodule May bleed, ulcerate	Predominantly vertical growth Rapid growth
Lentigo Maligna	Irregular patch of variable discolouration Head/neck	Slower, horizontal growth
Acral Lentiginous	Irregular patch of variable discolouration Palms and soles	All skin types, horizontal growth Sub-types: subungual melanoma (Hutchinson’s sign, pyramid sign)

Table 3: Table outlining the more typical forms of melanoma with associated details

MRCP Part 1 - Extensive acral lentiginous melanoma of the left sole of the foot

Extensive acral lentiginous melanoma of the left sole of the foot.

Image Source: Wikimedia Commons (2020). Photography of a large acral lentiginous melanoma, Licensed under a creative commons licence. Available for free at: https://commons.wikimedia.org/wiki/File:Photography_of_a_large_acral_lentiginous_melanoma.jpg (Accessed on: 2 November 2021).

Complete Guide to Clinical Genetics ST3 Application and Recruitment (2027)

Written by Medibuddy. Last updated: October 2026. Clinical Genetics is

Recruitment paused: NHS England is not running Clinical Radiology ST3+ recru

Written by Medibuddy. Last updated: October 2026. If you’re planning

Our mobile app allows you to access your interview and exam question banks wherever you are.