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Cylindroma
Cylindromas are smooth, round benign tumors of eccrine sweat glands that are most often found on the scalp. They often occur in clusters and may be compared to a bunch of grapes. In rare cases, the tumors coalesce and form one large tumor that covers the entire scalp. This is called a “turban tumor.”
Hereditary cylindromas are often multiple and are inherited in an autosomal dominant manner.
Sample Cases
A 45 year old man presents with two small, round, 1 cm masses on his scalp. They have grown larger over the last 6 months. On exam, the masses are solid and move under the skin of the scalp. The overlying skin appears normal. Biopsy reveals lobules of epithelial cells in a mosaic pattern. The lobules have dark basal cells on the periphery and paler cells in the center. After excision, the tumors do not return.
A 65 year old man presents to the clinic with a small 0.5 cm mass on the scalp that has been growing over the last 6 months. On exam, it is firm, smooth, and round.
![](https://physiomi.com/wp-content/uploads/2020/02/cylindroma-small.jpg)
Source: Dermatoscopic pattern of a cylindroma ©2014 Cohen et al
Resources & Attribution
- Figure 1
- Dermatoscopic pattern of a cylindroma.
- ©2014 Cohen et al
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3919843/
- Image under CC attribution licence
- Header Image source:
- Dermal cylindroma of the scalp.
- © National Journal of Maxillofacial Surgery
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3513812/
- Image under CC3.0 licence
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