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Linear lesions – 9 cases

From time to time, we come across linear skin lesions. This can be very helpful diagnostically as there is a limited range of possible diagnoses. A careful history and examination of the morphology of the lesions usually sorts them out.

For each of the nine cases, study the image(s) and then answer the questions. You can click on the image to view a larger version if required.

Each case should take approximately 2 minutes to complete. There is a list of suggested further reading material at the end of the quiz.

Case 2

Striae atrophicae

Striae distensae or stretch marks are of course extremely common but they may cause considerable cosmetic dismay. The young man illustrated grew several centimetres within a few weeks, damaging the connective tissue of his back. Striae affect many pregnant bellies and chubby thighs even in those of normal body weight. They are more numerous and impressive when caused by excessive local or systemic endogenous or exogenous corticosteroid. Striae are basically dermal scars accompanied by epidermal atrophy. The cause is not understood, but may relate to excessive mast cell degranulation with subsequent damage to collagen and elastin.

Mark question

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