Trichilemmal cyst with homogeneous blue pigmentation on dermoscopy

ABSTRACT A 61‐year‐old woman was referred to our dermoscopy unit for a pigmented lesion that had been present on her left arm for 8 years. The patient did not notice any enlargement or change in colour. On dermoscopy, homogeneous blue pigmentation was seen. The lesion was excised with the pre‐operat...

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Bibliographic Details
Published in:Australasian journal of dermatology 2009-11, Vol.50 (4), p.301-302
Main Authors: Gencoglan, Gulsum, Karaarslan, Isil Kilinc, Akalin, Taner, Ozdemir, Fezal
Format: Article
Language:English
Subjects:
Biological and medical sciences
blue naevus
Cysts - diagnosis
Dermatology
Dermoscopy
Diagnosis, Differential
Female
homogeneous blue pigmentation
Humans
Medical sciences
Middle Aged
Skin Diseases - diagnosis
trichilemmal cyst
Tumors of the skin and soft tissue. Premalignant lesions
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Summary:ABSTRACT A 61‐year‐old woman was referred to our dermoscopy unit for a pigmented lesion that had been present on her left arm for 8 years. The patient did not notice any enlargement or change in colour. On dermoscopy, homogeneous blue pigmentation was seen. The lesion was excised with the pre‐operative diagnosis of melanoma, blue naevus and dermatofibroma. Histopathological examination showed a trichilemmal cyst in the mid‐dermis. Although homogeneous blue pigmentation on dermoscopy is the hallmark of blue naevus, it may be seen in metastatic melanoma and exceptionally in hemosiderotic and cellular types of dermatofibroma. Trichilemmal cyst should be borne in mind also in the dermoscopic differential diagnosis.
ISSN:0004-8380
1440-0960
DOI:10.1111/j.1440-0960.2009.00566.x