13. Quality indicators – Actinic keratosis and squamous cell carcinoma of the skin
Pathology report
Numerator
Number of patients with the following information in the histological report: - histological tumor type, - histological depth extension (description u measurement), - perineural spread, - vascular invasion, - degree of differentiation and - R classification invasive tumor portion.
Denominator
All patients with SCC and excision
Quality target / reference range
EK
Notes
Quality Objective:
To provide complete information in pathology reports for excision of a SCC as frequently as possible.
The numerator is always a subset of the denominator. The quality indicator is not to be documented with the oncology basic data set of the cancer registries (status: 10.2018).
Reference recommendations
The histology report for squamous cell carcinoma of the skin shall include the following in addition to the diagnosis:
- Histological tumor type (for specific subtypes of squamous cell carcinoma of the skin)
- Description of the histological depth extension in relation to the anatomical stratification (especially from level V, corresponding to infiltration of the subcutis)
- Measurement of the depth extension from an invasion depth of 2 mm (corresponds approximately to the diameter of a 10x field of view)
- If present, indication of the presence of perineural involvement, vascular invasion or poor differentiation
- Completeness of resection of the invasive tumor portion
- Consensus
- Strong consensus (100%)