Delineating the Perforating Dermatoses

Richard Limbert, DO PGY-4 AOCD Spring Meeting April 23, 2015 Objectives

• Present case reports of perforating dermatoses • Review unique clinical and histopathological findings • Establish a concise classification scheme • Discuss the workup of a patient with a perforating dermatosis • Review potential treatment options Perforating Dermatoses

• Group of papulonodular skin diseases clinically characterized by a central keratotic core • Core represents transepidermal elimination of dermal elements • 4 primary perforating dermatoses – Reactive perforating collagenosis (RPC) – Acquired perforating dermatosis (APD) – Elastosis perforans serpiginosa (EPS) – Perforating calcific elastosis (PCE) Primary Perforating Dermatoses

Perforating Location Associations Substance

Reactive Perforating Collagen Extremities, overlying None Collagenosis sites of trauma

Acquired Perforating Collagen, elastic Lower extremities or Pruritus, diabetes, Dermatosis fibers, or necrotic generalized renal failure, liver material disease, malignancies, endocrinopathies Elastosis Perforans Elastic fibers Lateral neck, flexures Genetic diseases, Serpiginosa penicillamine

Perforating Calcific Calcified elastic Abdomen, Multiparity, obesity Elastosis fibers periumbilical, areolar Case Report

• 17 year old Hispanic male • 3 year history of spreading “” • Denies pain, pruritus, or manipulation of lesions • Cosmetically disturbing • Past Medical History – Asthma, allergic rhinitis, medulloblastoma • Prior treatments – Lactic acid, salicylic acid, OTC cryotherapy Case Report Case Report Case Report Right Elbow

4x Right Elbow

10X Verhoeff-van Gieson Stain Reactive Perforating Collagenosis

Case Patient • Topical tretinoin 0.1% cream • Mild improvement • Lesions tend to recur • Patient admits to non-compliance –Lesions no longer bother him Follow-up after topical tretinoin Reactive Perforating Collagenosis

• Rare, <50 reported cases • Familial, typically autosomal recessive – Genetic abnormality in collagen • Begins in childhood • 5-8mm keratotic papules over areas of trauma – + Koebnerization – Asypmtomatic – May spontaneously resolve Primary Perforating Dermatoses

Perforating Location Associations Substance

Reactive Perforating Collagen Extremities, None Collagenosis overlying sites of trauma Acquired Perforating Collagen, elastic Lower extremities or Pruritus, diabetes, Dermatosis fibers, or necrotic generalized renal failure, liver material disease, malignancies, endocrinopathies Elastosis Perforans Elastic fibers Lateral neck, flexures Genetic diseases, Serpiginosa penicillamine

Perforating Calcific Calcified elastic Abdomen, Multiparity, obesity Elastosis fibers periumbilical, areolar Case Report

• 42 year old African American male • 3 week history of eruption on trunk and limbs • Extremely pruritic • History of alcoholic hepatitis • Similar episode a few years ago that resolved after UV light therapy Case Report Case Report Right Lower Leg

10X Verhoeff-van Gieson Stain

40X Acquired Perforating Dermatosis

• Includes perforating dermatoses arising in adults previously named: – Acquired reactive perforating collagenosis – Acquired elastosis perforans serpiginosa – Kyrle’s disease – Perforating folliculitis • May represent different stages of development • Lesions have different morphologies in the same patient – Collagen, elastin, amorphous material, +/- follicular structures Acquired Perforating Dermatosis

• Lower legs or generalized • Pruritus → chronic scratching → epidermal hyperplasia • Diabetes mellitus or renal failure (10% of dialysis patients) – ↑ fibronectin found in serum and lesional skin • Other associations – Liver: primary sclerosing cholangitis, alcoholic cirrhosis – Malignancy: lymphoma, hepatic, thyroid – Endocrine: hypothyroid, hyperparathyroid – Congestive – Drugs: indinavir, TNFα inhibitors Primary Perforating Dermatoses

Perforating Location Associations Substance

Reactive Perforating Collagen Extremities, None Collagenosis overlying sites of trauma Acquired Perforating Collagen, elastic Lower extremities or Pruritus, diabetes, Dermatosis fibers, or necrotic generalized renal failure, liver material disease, malignancies, endocrinopathies Elastosis Perforans Elastic fibers Lateral neck, flexures Genetic diseases, Serpiginosa penicillamine

Perforating Calcific Calcified elastic Abdomen, Multiparity, obesity Elastosis fibers periumbilical, areolar Elastosis Perforans Serpiginosa Elastosis Perforans Serpiginosa

• 2-5mm keratotic papules – Annular or serpiginous pattern – Lateral neck > face, flexures – Childhood or 2nd decade – Asymptomatic • 3 general categories – Idiopathic (most common) – Reactive – Drug-induced Reactive Elastosis Perforans Serpiginosa

• 40% have genetic disease affecting fibrous tissue – Down syndrome (most common) – Ehlers-Danlos syndrome – Osteogenesis imperfecta – Marfan syndrome – Pseudoxanthoma elasticum – Systemic sclerosis – Rothmund-Thomson syndrome – Acrogeria Hematoxylin and Eosin vs Acid Orcein-Giemsa Stain Drug-induced EPS

• Penicillamine – 1% of patients – Inhibits lysyl oxidase → elastic tissue damage – “bramble brush” elastic fibers with lateral buds Primary Perforating Dermatoses

Perforating Location Associations Substance

Reactive Perforating Collagen Extremities, None Collagenosis overlying sites of trauma Acquired Perforating Collagen, elastic Lower extremities or Pruritus, diabetes, Dermatosis fibers, or necrotic generalized renal failure, liver material disease, malignancies, endocrinopathies Elastosis Perforans Elastic fibers Lateral neck, flexures Genetic diseases, Serpiginosa penicillamine

Perforating Calcific Calcified elastic Abdomen, Multiparity, obesity Elastosis fibers periumbilical, areolar Perforating Calcific Elastosis Perforating Calcific Elastosis

• Rare • Most commonly reported in multiparous, obese, middle aged, black women • Periumbilical and/or periareolar • Repeated trauma of stretching causes elastic fiber degeneration • Similar clinical and histological appearance to pseudoxanthoma elasticum (PXE) – Lacks systemic symptoms, screen for FHx of PXE • No effective treatment Periumbilical Plaque Primary Perforating Dermatoses

Perforating Location Associations Substance

Reactive Perforating Collagen Extremities, None Collagenosis overlying sites of trauma Acquired Perforating Collagen, elastic Lower extremities or Pruritus, diabetes, Dermatosis fibers, or necrotic generalized renal failure, liver material disease, malignancies, endocrinopathies Elastosis Perforans Elastic fibers Lateral neck, flexures Genetic diseases, Serpiginosa penicillamine

Perforating Calcific Calcified elastic Abdomen, Multiparity, obesity Elastosis fibers periumbilical, areolar Differential Diagnosis

Keratotic papules • Flegel’s disease • • Keratoacanthomas • Molluscum contagiosum • Darier’s disease • Verruca vulgaris • pilaris • • • Squamous cell carcinoma Annular plaques • annulare • Actinic Granuloma • Tinea • Porokeratosis • Sarcoidosis • Discoid lupus Secondary Perforating Disorders

• Endogenous substances – Chondrodermatitis nodularis helicis – Hematomas – Perforating pseudoxanthoma elasticum – Perforating calcinosis – Lichen nitidus – Papular mucinosis – Amyloidosis Secondary Perforating Disorders

• – Perforating – lipoidica – Sarcoidosis – Rheumatoid nodule – Gout tophi Secondary Perforating Disorders

• Foreign material – Silica – Wood – Suture • Infectious disease – Chromoblastomycosis – Leprosy – Shistomiasis – – Leishmaniasis Secondary Perforating Disorders

• Tumor cells – Melanoma – Paget‘s disease – Mycosis fungoides – Pilomatricoma – Nevus sebaceous – Keratoacanthoma Workup

• Thorough history and physical – Evaluate for underlying disease – Screen for family history • Check labs – CBC – CMP – Ferritin • Biopsy is essential for diagnosis • Proper referrals if warranted Treatment

• Often disappointing. No controlled trials. • Treat the underlying disease (APD) • Topical steroids (concomitant LSC, PN) • Target pruritus – Soothing lotions – Antihistamines – UV light • Destruction: cryotherapy, CO2 laser – Caution dyspigmentation, poor wound healing on lower legs Treatment

• Allopurinol (APD) – Free radical scavenger, inhibits neutrophil activity • Topical and systemic retinoids • Few cases show success with: – Antibiotics (clindamycin, doxycycline) – Keratolytics – 5-FU – Methotrexate – Antimalarials Summary

• Perforating disorders are characterized by keratotic plugs of the perforating material • There are four distinct primary perforating diseases – Reactive perforating collagenosis (RPC) – Acquired perforating dermatosis (APD) – Elastosis perforans serpiginosa (EPS) – Perforating calcific elastosis (PCE) • Biopsy is key to establishing the diagnosis Summary

• The diagnosis of a perforating disorder should prompt the evaluation for systemic disease • Treatment is often difficult – Success with: • Treating the underlying disease • Targeting pruritus • UV light • Allopurinol • Retinoids References

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Dr. Richard Miller Dr. George Gibbons Rachel White, OMS IV