Related Experiment Video
Updated: Jul 15, 2026

08:59
Human Dupuytren's Ex Vivo Culture for the Study of Myofibroblasts and Extracellular Matrix Interactions
Published on: April 18, 2015
Palmar filiform hyperkeratosis (FH) associated with underlying pathology?
R K Mehta1, R B Mallett, C Green
1Department of Dermatology, Addenbrooke's Hospital, Oxford, UK. rokmehta@netscapeonline.co.uk
Clinical and Experimental Dermatology
|June 20, 2002
Summary
Filiform hyperkeratosis presents as spiny palm growths, potentially linked to malignancy or myelofibrosis. Thorough investigation is crucial for affected patients due to associated health risks.
Area of Science:
- Dermatology
- Oncology
- Hematology
Background:
- Palmar filiform hyperkeratosis is a rare skin condition.
- It presents as multiple thin, spiny keratotic projections on the palms.
- Previous reports suggest an association with underlying malignancy.
Observation:
- This study details two patients with palmar filiform hyperkeratosis.
- One patient exhibited myelofibrosis, a novel association.
- A second patient presented with filiform hyperkeratoses on palms and soles without an identified underlying disorder.
Findings:
- Filiform hyperkeratosis can manifest with or without associated systemic conditions.
- Myelofibrosis represents a newly identified potential comorbidity.
- The risk of underlying malignancy necessitates comprehensive patient evaluation.
Implications:
- Patients with filiform hyperkeratosis require thorough medical investigation.
- Early detection of associated malignancies or hematological disorders is critical.
- This condition highlights the importance of a multidisciplinary approach in diagnosis and management.
More Related Videos
Related Concept Videos
Types of Intermediate Filaments
The intermediate filaments are an essential component of the cytoskeleton. Presently six types of intermediate filament have been identified. Type I and II are acidic and basic keratin proteins. Type III is of mesodermal origin and comprises four proteins: vimentin, desmin, glial fibrillary acidic protein (GFAP), and peripherin. Vimentin is commonly found in mesenchymal cells, desmin in muscle cells, GFAP in astrocytes, while peripherin is found in peripheral nervous system neurons (PNS). Type...
Papillary Dermis
Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
Accessory Structures of the Skin: Nails
Nails are one of the important accessory structures of the skin. They are hard, protective structures that cover the dorsal surface of the distal phalanges of fingers and toes. Nails are composed of specialized keratinized cells and serve various functions, including protection, sensation, and manual dexterity.
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
Diabetic Foot Ulcer
Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...
Huntington Disease l: Introduction
Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show reduced penetrance,...

