Path Quiz Case- 76
Dr Sampurna Roy
MD
 Site created by Dr Sampurna Roy MD
|
| Cutaneous Deposits |
| Verruciform Xanthoma |
|
Granulomatous Reaction Pattern of the Skin
Annular Elastolytic Giant Cell Granuloma Skin lesion in Crohn's Disease Interstitial Granulomatous Dermatitis |
| Skin Tumours |
Visit:
Lichen Planus Like Cutaneous Lesions: Lichen nitidus is a rare benign chronic papular lesion of unknown etiology. It was originally regarded as a variant of lichen planus but it is now considered a distinct entity. Clinical presentation: Multiple , small flesh-coloured papules. These are 1-2 mm in diameter. Clinical variants: Generalized, actinic, perforating , linear, vesicular etc. Age: Usually present in children and young adult males. Site: Upper extremities, chest, abdomen, genitalia. Rarely palms, soles and nails may be involved. Microscopic features:
Image
Link1 Dense, well circumscribed subepidermal infiltrate. Limited to one or two adjacent dermal papilla. Claw-like downgrowths of the rete ridges are present at the margins of the infiltrate. Inflammatory cells push against the undersurface of the epidermis. Inflammatory infiltrate consists of lymphocytes, histiocytes, melanophages, plasma cells in some cases, a few epithelioid cells and occasional giant cells. Differential diagnosis: Disseminated granuloma annulare ; Early lesion of lichen scrofulosorum (granulomas in lichen scrofulorum do not cause widening of the papillae) ; Giant cell lichenoid dermatitis: a possible manifestation of sarcoidosis ; Lichenoid and granulomatous dermatitis ; Micropapular sarcoidosis simulating lichen nitidus.
|
|
Pathology of the Eyelid Inflammatory diseases of the Eyelid Tumour and tumour-like lesions of the Eyelid Epidermal tumours of the Eyelid |
|
Cutaneous infection and infestations Histopathological patterns in cutaneous infections 1: Bacterial, Rickettsial and Chlamydial infection |