Acrokeratosis paraneoplastica (Bazex syndrome) associated with peripheral T-cell lymphoma

Acrokeratosis neoplastica (Bazex syndrome): Report of two cases and literature review

The skin often reflects the presence of internal diseases. Acrokeratosis neoplastica (Bazex syndrome) is a unique skin manifestation characterized by its erythematous hyperkeratosis with yellowish, adherent scales on the palm, sole, or other acral locations. There is a potentially high association between Bazex syndrome and malignant pathology, especially squamous cell carcinomas (SCC). To date, various skin conditions have been recognized as diagnostic indicators of insidious malignancies. The recognition of paraneoplastic dermatoses has a strong potential for prompt cancer detection and early therapeutic intervention. Here we describe clinical and forensic cases of Bazex syndrome that are associated with SCC of the glottis and lung. Bazex syndrome has been reported to be associated with a variety of cancers in addition to SCC. We review the clinical manifestations of Bazex syndrome and include updated knowledge on disease pathogenesis.

Bazex Syndrome (Acrokeratosis Paraneoplastica): A Narrative Review of Pathogenesis, Clinical Manifestations, and Therapeutic Approaches

Acrokeratosis paraneoplastica, also known as Bazex syndrome, is a relatively understudied yet clinically important dermatological condition that is inextricably associated with squamous cell carcinoma, predominantly of the upper respiratory and gastrointestinal tracts. Manifesting as unique psoriasis-like cutaneous lesions, Bazex syndrome functions as an early warning signal for underlying malignancies, underscoring the urgent need for its timely diagnosis and intervention. Notwithstanding its clinical relevance, the molecular and cellular mechanisms underpinning its pathogenesis are not fully understood. To address these gaps, this comprehensive literature review undertook a meticulous search across reputable databases such as EMBASE, MEDLINE/PubMed, and Web of Science. Our analysis ventures into multiple putative pathogenic pathways, including shifts in Th2 immune responses, aberrant secretion of growth factors, and immunological reactions to tumor-specific antigens. We also detail the clinical phenotypes of Bazex syndrome and their chronological linkage with the corresponding malignancies. Finally, the review evaluates the therapeutic effectiveness of various approaches, including but not limited to targeted cancer treatments, PUVA therapy, and topical corticosteroids. This synthesis aims to arm healthcare providers with a nuanced understanding of Bazex syndrome, facilitating more accurate diagnosis and tailored treatment paradigms.

Acrokeratosis Can Be a Warning Sign of an Underlying Malignancy

Introduction

Some cutaneous manifestations can be the first presentation of an underlying malignancy. These so-called paraneoplastic syndromes can sometimes be very subtle or strongly resemble other benign cutaneous diseases.

Aims

In this report, we want to emphasize the need for further investigation of eczema-like cutaneous presentations which develop at a later age and are recalcitrant to therapy. Exclusion of an underlying malignancy needs to be considered.

Patients and Methods

A 53-year-old man with thickening of the skin, more pronounced on the hands, feet and face, was diagnosed with classic nodular sclerosing Hodgkin disease based on cutaneous presentation.

Results

After two rounds of chemotherapy (adriamycin, bleomycin, vinblastine and dacarbazine), the cutaneous symptoms had disappeared. After six rounds of chemotherapy and 14 months of follow-up, the patient is still in remission without recurrence of the cutaneous symptoms.

Conclusions

Cutaneous symptoms recalcitrant to adequate treatment should raise suspicion and prompt further investigation to exclude an underlying malignancy. A multidisciplinary approach with the dermatology department can accelerate diagnosis and improve the patient’s prognosis.

LEARNING POINTS