Abstract
Differences regarding signs and symptoms between nodular melanoma (NM) and superficial spreading melanoma (SSM) with a tumour thickness < or = 2.00 mm were studied. Reasons for seeking medical attention were also investigated. Semi-structured interviews were conducted with 22 patients with NM diagnosed between 1994 and 1999 and 32 patients with SSM, matched to the NM patients with respect to age at diagnosis, gender and tumour thickness. NM were smaller in diameter, and 5 of 6 patients reporting a diameter <5 mm had NM. NM were more often new lesions than SSM, which more often had developed from pre-existing naevi. In most cases (61%), the melanoma was first detected by the patient and in 17% it was detected by the patient in combination with a family member. The most important reasons to seek medical attention were a change in the lesion or a symptom (65%), followed by encouragement from others to seek medical attention. Twenty-four patients (44%) had no symptoms of melanoma prior to diagnosis. Our results have important implications for prevention. It should be emphasized in public education that melanomas may have a diameter <6 mm and that family members have an important role in detection of melanoma and in motivating medical advice.
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