Pilomatrixoma (calcifying epithelioma of Malherbe)

Pilomatrixoma (calcifying epithelioma of Malherbe)

These are benign hair matrix cell tumours that often calcify; 40% are found in the under-10 age group. Josef Jadassohn , 1863–1936, dermatologist, Breslau, Germany (now Wroc ł aw , Poland). Desire M Bourneville , 1840–1909, physician, Le Bicêtre, Paris, France. Trichilemmoma (naevus sebaceous of Jadassohn) Trichilemmoma is a congenital hamartoma with the appear - ance of a linear verrucous naevus; 10% lifetime risk of forming a BCC ( Figure 45.24 ). Adenoma sebaceum (tuberous sclerosis, Bourneville disease) These are facial papules (angiofibromata) that are red-brown depending on skin colour and usually appear on the naso - labial folds, cheek and chin. They usually appear in children before 10 years of age and increase in size and number until adolescence. Cosmetic removal by argon or pulsed-dye lasers Figure 45.25 ). or scalpel is indicated ( Rhinophyma Rhinophyma is the end-stage sequela of nasal acne rosacea ( Figure 45.26 ). It is nasal sebaceous gland hypertrophy and hyperplasia and tends to a ff ect elderly men (male-to-female ration 12:1). Occult BCCs exist in 3%. Treatment by derm - abrasion or laser resurfacing produces good results.

Figure 45.21 Blue naevus (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.22 Naevus of Ota (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.23 Naevus of Ito (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.24 Naevus sebaceous of Jadassohn (courtesy of St John’s Institute for Dermatology, London, UK).

Pilomatrixoma (calcifying epithelioma of Malherbe)

These are benign hair matrix cell tumours that often calcify; 40% are found in the under-10 age group. Josef Jadassohn , 1863–1936, dermatologist, Breslau, Germany (now Wroc ł aw , Poland). Desire M Bourneville , 1840–1909, physician, Le Bicêtre, Paris, France. Trichilemmoma (naevus sebaceous of Jadassohn) Trichilemmoma is a congenital hamartoma with the appear - ance of a linear verrucous naevus; 10% lifetime risk of forming a BCC ( Figure 45.24 ). Adenoma sebaceum (tuberous sclerosis, Bourneville disease) These are facial papules (angiofibromata) that are red-brown depending on skin colour and usually appear on the naso - labial folds, cheek and chin. They usually appear in children before 10 years of age and increase in size and number until adolescence. Cosmetic removal by argon or pulsed-dye lasers Figure 45.25 ). or scalpel is indicated ( Rhinophyma Rhinophyma is the end-stage sequela of nasal acne rosacea ( Figure 45.26 ). It is nasal sebaceous gland hypertrophy and hyperplasia and tends to a ff ect elderly men (male-to-female ration 12:1). Occult BCCs exist in 3%. Treatment by derm - abrasion or laser resurfacing produces good results.

Figure 45.21 Blue naevus (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.22 Naevus of Ota (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.23 Naevus of Ito (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.24 Naevus sebaceous of Jadassohn (courtesy of St John’s Institute for Dermatology, London, UK).

Pilomatrixoma (calcifying epithelioma of Malherbe)

These are benign hair matrix cell tumours that often calcify; 40% are found in the under-10 age group. Josef Jadassohn , 1863–1936, dermatologist, Breslau, Germany (now Wroc ł aw , Poland). Desire M Bourneville , 1840–1909, physician, Le Bicêtre, Paris, France. Trichilemmoma (naevus sebaceous of Jadassohn) Trichilemmoma is a congenital hamartoma with the appear - ance of a linear verrucous naevus; 10% lifetime risk of forming a BCC ( Figure 45.24 ). Adenoma sebaceum (tuberous sclerosis, Bourneville disease) These are facial papules (angiofibromata) that are red-brown depending on skin colour and usually appear on the naso - labial folds, cheek and chin. They usually appear in children before 10 years of age and increase in size and number until adolescence. Cosmetic removal by argon or pulsed-dye lasers Figure 45.25 ). or scalpel is indicated ( Rhinophyma Rhinophyma is the end-stage sequela of nasal acne rosacea ( Figure 45.26 ). It is nasal sebaceous gland hypertrophy and hyperplasia and tends to a ff ect elderly men (male-to-female ration 12:1). Occult BCCs exist in 3%. Treatment by derm - abrasion or laser resurfacing produces good results.

Figure 45.21 Blue naevus (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.22 Naevus of Ota (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.23 Naevus of Ito (courtesy of St John’s Institute for Dermatology, London, UK). Figure 45.24 Naevus sebaceous of Jadassohn (courtesy of St John’s Institute for Dermatology, London, UK).