Cutaneous Chondroma D23.9

Chondroma is a very rare benign cartilage tumor that is evenly composed of cartilage tissue. It occurs predominantly as an intraosseous tumor (enchodroma). Cutaneous chondroma is a very rare, benign tumor of cartilage tissue with no connection to the bone. See also Chondroma cysticum, see also Chondroma myxomatodes.

In adults between the ages of 30 and 60.

Hereditary predisposition (a connection with the incomplete expression of the gene for tuberous sclerosis was suspected/Wang S et al. 2025). Trauma is also cited as a trigger factor.

Fingers, more rarely on hands and feet, tongue, auricles (see illustration), nose.

Clinically, it is a circumscribed, rock-hard growth in the subcutaneous adipose tissue.

Lobularly articulated, encapsulated tumour nodes of mature chondrocytes arranged in nests, with small cell kerenes. Necrosis and calcification are not uncommon.

Dermatofibroma

Cartilaginous exostosis

Mixed tumor of the skin

Dermoid cyst.

1. Ando K et al. (1996) Cutaneous cartilaginous tumor. Dermatol Surg 21:339-341.
2. Batalla A et al. (2015) True cutaneous chondroma: a case report. J Cutan Pathol 42:657-659.
3. Dimitrijevic MVet al. (2019) Chondroma of the Tongue. J Craniofac Surg 30:e315-e317.
4. Gungor Set al. (2013) Soft tissue chondroma of the index finger: clinical, histological and radiological findings in a unique case. Dermatol Online J 19:18176.
5. Kwon H et al (2010) Extraskeletal chondroma in the auricle. J Craniofac Surg 21:1990-1991
6. Shinojima Y et al. (2006) Cutaneous chondroma with overlying pigmentation clinically mimicking dermatofibroma. Br J Dermatol 154:178-81. PubMed PMID: 16403116.
7. Wang S et al. (2025) A firm nodule on the nasal tip. J Dtsch Dermatol Ges 23:397-399.