Langerhans cell sarcoma: a case report
Sheila M Valentín-Nogueras1, Rachelle Seijo-Montes, Elena Montalván-Miró
1Department of Dermatology, University of Puerto Rico School of Medicine, San Juan, PR 00936-5067, USA. sheila_valentin@hotmail.com
Insights
Langerhans cell sarcoma is a rare and aggressive cancer. Early diagnosis using advanced techniques is crucial for managing this rare neoplasm, which has a high tendency to recur and metastasize.
Area of Science:
- Dermatology
- Oncology
- Pathology
Background:
- Primary cutaneous neoplasms of histiocytes and dendritic cells are rare.
- Langerhans cells, a type of antigen-presenting dendritic cell, can form neoplasms classified as Langerhans cell histiocytosis (benign) or Langerhans cell sarcoma (malignant).
Observation:
- Langerhans cell sarcoma is an extremely rare entity, with only 30 cases reported previously.
- This report details a new case of Langerhans cell sarcoma presenting with multifocal cutaneous involvement.
Findings:
- Diagnosis was confirmed through histopathological, immunohistochemical, and ultrastructural analyses, including the identification of Birbeck granules.
- The reported case exhibited an aggressive clinical course, with metastatic disease developing within two years, leading to patient death.
Implications:
- Early recognition and diagnosis of Langerhans cell sarcoma are critical due to its aggressive nature and propensity for recurrence and metastasis.
- Ancillary diagnostic techniques, including immunohistochemistry and ultrastructural studies, are highly advantageous for confirming this rare neoplasm.
Abstract:
Primary cutaneous neoplasms of histiocytes and dendritic cells are rare. Langerhans cells are a subset of antigen-presenting dendritic cells. Neoplasms of Langerhans cells are classified into cytologically benign Langerhans cell histiocytosis and cytologically malignant Langerhans cell sarcoma. Langerhans cell sarcoma is a rare entity characterized by multiorgan involvement and an aggressive clinical course. To date, only 30 cases of Langerhans cell sarcoma, including the present case, have been reported. We report a new case of Langerhans cell sarcoma that presented with multifocal cutaneous involvement. Diagnosis was done based on histopathological, immunohistochemical evaluation, as well as ultrastructural analysis identifying the presence of Birbeck granules. Our case represents a new case of this extremely rare, overtly aggressive neoplasm of Langerhans cells. Within 2 years of diagnosis, the patient developed metastatic disease and consequently died. Early recognition is important because of the tendency of Langerhans cell sarcoma to recur and metastasize. Therefore, ancillary techniques such as immunohistochemical and ultrastructural studies to confirm the diagnosis are very advantageous.
