1. National Specialist Dermatopathology EQA Scheme
Circulation K

2. Case 165
Female aged 7
Skin dorsum left foot

12. Most popular diagnosis:
Cellular blue naevus/benign combined naevus

13. Case 166
Female aged 58.
30 year history of hyperkeratotic plaques on the scalp and face ? Darier's disease.

18. Most popular diagnosis:
Darier’s disease

19. Case 167 Female aged 26. Blue naevus. Skin lesion right ear.
Skin fragment 9 x 5 mm with a central dark lesion 5 x 5 mm.
Some, but not all, lesional cells HMB45 positive.

29. Withdrawn from scoring

30. Case 168
Female aged 31.
Four week history of red plaques on thighs, feels hot ? Chilblains. Works outside washing cars in jeans.
Lesions appeared during cold weather & snow in Dec 2010.
Immuno : ANA negative.

35. Most popular diagnosis:
Perniosis / cold panniculitis

36. Case 169
Female aged 79.
Psoriasiform rash on trunk and limbs.

41. Most popular diagnosis:
Psoriasis

42. Case 170 Male aged 70. ? Bowen's disease. Specimen: Excision
Immuno : Melan A (-), S100 (-), EMA (+), CK20 (-)

47. Most popular diagnosis:
Paget’s disease

48. Case 171
Female aged 31.
Mole lower back - increased in size over 2-6 months.
Skin ellipse 23 x 13 x 5 mm. Surface bears a central variably pigmented lesion measuring 13 mm maximum with an irregular outline. Slightly raised one end

58. Most popular diagnosis
Benign compound naevus +/- with low grade dysplasia

59. Case 172 Female aged 61. Raised papular plaque, left back
? G. Annulare
Macro: 6mm punch biopsy

63. Most popular diagnosis:
Granuloma annulare

64. Case 173 Female age 43. ?erythema nodosum, front of right leg.
O/E raised red nodules over shins.
HIV positive. TB not proved on lymph node culture.
Previous biopsy showed similar features.
T-spot test positive

71. Most popular diagnosis:
Erythema nodosum

72. Case 174
Male aged 64 years.
8 mm warty lesion lateral aspect of right eyebrow of 10 years duration.

82. Most popular diagnosis:
Syringocystadenoma papilliferum

83. The End!
Thank you!