The information on this website is not intended for diagnosis or treatment. Please consult your physician for health concerns.

+90 850 321 50 00

Paraneoplastic Pemphigus (Detailed)

Autoimmune blistering disease associated with malignancy: severe mucosal erosions and high mortality

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dermatoloji department. Book Appointment →

What is Paraneoplastic Pemphigus (Detailed)?

PNP, also termed paraneoplastic autoimmune multiorgan syndrome (PAMS), is characterized by autoantibodies against multiple antigens including desmogleins 1 and 3, plakins (envoplakin, periplakin, desmoplakin I/II), BP230, BP180, and α-2 macroglobulin-like 1 (A2ML1). Bronchiolitis obliterans is a potentially fatal pulmonary manifestation.

Associated malignancies (Anhalt criteria): non-Hodgkin lymphoma (38%), CLL (18%), Castleman disease (18%, often unicentric retroperitoneal), thymoma (6%), Waldenström macroglobulinemia (6%), spindle cell sarcomas, others. Pediatric PNP often associated with Castleman disease.

Diagnosis (Anhalt 1990 criteria): polymorphic mucocutaneous eruption, intraepithelial acantholysis with keratinocyte necrosis on biopsy, deposition of IgG/C3 in epidermis on DIF, autoantibody response to plakin family on immunoblot/IIF on rat bladder. Treatment: tumor removal/treatment + high-dose corticosteroids + rituximab + IVIG; daclizumab and alemtuzumab for refractory cases.

Symptoms

Severe, painful stomatitis (universal, often presenting feature)
Persistent oral ulcerations resistant to therapy
Polymorphous skin lesions: bullae, lichenoid eruption, target lesions, EM-like
Conjunctival inflammation, cicatrizing conjunctivitis
Genital, esophageal, and respiratory mucosal involvement
Bronchiolitis obliterans (progressive dyspnea, fatal in ~30%)
Painful, hemorrhagic crusted lips (cheilitis exfoliativa)
Nail changes, paronychia

Risk Factors

Underlying lymphoproliferative malignancy (NHL, CLL, Castleman)
Thymoma (myasthenia gravis association)
Adult middle age (45-70 years), but pediatric cases (Castleman)
No specific HLA association consistently identified
Both sexes affected approximately equally
Geographic: worldwide, no ethnic predilection

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Severe, persistent oral ulcerations not healing >4 weeks
  • New skin blisters or atypical eruptions in patient with cancer
  • Painful mucositis interfering with eating/drinking
  • Progressive dyspnea (concern for bronchiolitis obliterans)
  • Cicatrizing conjunctivitis with vision threat
  • New polymorphous skin eruption with mucosal involvement
  • Failure to respond to treatment for presumed pemphigus vulgaris

Treatment Methods

01
Tumor management: surgical resection (Castleman, thymoma), chemotherapy (lymphoma)
02
Rituximab (375 mg/m² weekly × 4 or 1g × 2) - cornerstone therapy
03
High-dose corticosteroids (prednisone 1-2 mg/kg/day, methylprednisolone pulse)
04
IVIG (2 g/kg per cycle, monthly)
05
Cyclosporine, mycophenolate mofetil (steroid-sparing)
06
Plasmapheresis or immunoadsorption (severe acute disease)
07
Daclizumab, alemtuzumab (refractory cases)
08
Wound care, infection prophylaxis (immunosuppression risk)
09
Pulmonary monitoring (PFTs, HRCT) - bronchiolitis obliterans
10
Ophthalmology consultation (cicatrizing conjunctivitis)
11
Multidisciplinary care: dermatology, oncology, ophthalmology, pulmonology
12
Poor prognosis - 5-year mortality 75-90% despite treatment

Which Department to Visit?

You can visit our Dermatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Dermatoloji Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

Book AppointmentContact Us

Related Health Topics

Other articles from the same department you may want to explore.

Eczema (Atopic Dermatitis)

Dermatoloji

Atopic dermatitis is a chronic skin disease commonly seen especially in children, flaring with genetic predisposition and environmental triggers.

Psoriasis

Dermatoloji

Psoriasis is an autoimmune disease in which skin cells proliferate rapidly when the immune system mistakenly attacks the skin, leading to thick scaly lesions.

Acne

Dermatoloji

Acne is a skin disease resulting from clogging of hair follicles with oil and dead skin cells, commonly seen in adolescence but can occur at any age.

Rosacea

Dermatoloji

Rosacea is a chronic inflammatory facial skin disease characterized by recurrent flushing, persistent erythema, telangiectasia, and inflammatory papules and pustules. Phymatous change and ocular involvement may complicate advanced disease.

Urticaria (Hives)

Dermatoloji

Urticaria is a skin condition with sudden pink-red wheals and intense itching that may follow an acute or chronic course.

Skin Fungal Infections

Dermatoloji

Skin fungal infections are common, contagious skin diseases caused by dermatophytes and yeast fungi colonizing the upper layers of the skin.

Hair Loss (Alopecia)

Dermatoloji

Alopecia is a general term for hair loss that can be genetic, hormonal, autoimmune, or nutritional; early intervention can slow progression.

Vitiligo

Dermatoloji

Vitiligo is an acquired autoimmune disease in which CD8+ T cells destroy melanocytes, producing well-demarcated depigmented patches. Early, sustained treatment can induce repigmentation and prevent progression; psychosocial impact warrants holistic care.

Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.