Related Experiment Video
Updated: May 21, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
A curious serendipitous finding: Spitz naevus combined with a syringoma
Simonetta Piana1, Moira Ragazzi, Iris Zalaudek
1Unit of Anatomic Pathology, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy.
Collision tumours, the rare combination of a Spitz naevus and a syringoma, are infrequently documented. This report details a unique case, offering insights into these rare dual neoplasms.
Area of Science:
- Dermatopathology
- Oncology
Background:
- Combined tumours, where different cell populations coexist, are recognized in melanocytic lesions.
- Tumour collisions involving melanocytic and epithelial neoplasms are less common.
- The collision of a Spitz naevus with an epithelial tumour is exceptionally rare.
Observation:
- This study presents a unique case of a Spitz naevus colliding with a syringoma.
- Clinical, dermoscopic, and histopathological findings were analyzed.
Findings:
- The case highlights the rare occurrence of a Spitz naevus in collision with a syringoma.
- Detailed histopathological examination confirmed the dual nature of the neoplasm.
Implications:
- This finding expands the understanding of combined and collision tumours in dermatopathology.
- Further research may elucidate the specific mechanisms and clinical significance of such rare tumour associations.
Related Concept Videos
Accessory Structures of the Skin: Sebaceous Glands
These glands that produce the oils on the skin and hair are holocrine glands. The mature...
Accessory Structures of the Skin: Sweat Glands
Sweat glands are classified as merocrine glands; that is, the secretions are excreted by exocytosis through a duct without affecting the cells of the gland. There...
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Papillary 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...
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Accessory Structures of the Skin: Nails
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...

