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Localization of Peutz-Jeghers macules to psoriatic plaques
Archives of Dermatology
|June 1, 1986
Abstract:
We report a case of the Peutz-Jeghers syndrome in which the characteristic pigmented macules developed within preexisting psoriatic plaques in sites extremely unusual for the syndrome. To our knowledge, ours is the first report of such a case in the English literature.
Insights
This case report details Peutz-Jeghers syndrome presenting with pigmented macules on psoriatic plaques, an unusual manifestation. This unique presentation is the first documented instance in English medical literature.
Area of Science:
- Dermatology
- Genetics
- Internal Medicine
Background:
- Peutz-Jeghers syndrome (PJS) is a rare autosomal dominant disorder.
- PJS is characterized by hamartomatous polyps in the gastrointestinal tract and mucocutaneous pigmented macules.
- Typical PJS macules occur on the lips, buccal mucosa, and perioral/perianal skin.
Observation:
- A patient presented with pigmented macules developing within pre-existing psoriatic plaques.
- The location of these macules was highly unusual for typical Peutz-Jeghers syndrome manifestations.
- Psoriatic plaques are typically erythematous, scaly lesions, not a common site for PJS macules.
Findings:
- The development of mucocutaneous pigmentation within psoriatic lesions represents a novel presentation of Peutz-Jeghers syndrome.
- This case highlights the potential for atypical manifestations of PJS.
- The coexistence of psoriasis and PJS macules in unusual locations was observed.
Implications:
- This finding expands the known clinical spectrum of Peutz-Jeghers syndrome.
- Clinicians should consider PJS in patients with atypical mucocutaneous pigmentation, even in unusual locations like psoriatic plaques.
- Further research may elucidate the pathomechanisms underlying this unusual association.