What is carcinoma erysipeloides?
Carcinoma erysipeloides is an uncommon form of cutaneous metastasis in which malignant cells spread to the skin via superficial dermal lymphatic vessels.1
What are the clinical features of carcinoma erysipeloides?
Carcinoma erysipeloides presents as a patch of thickened, red skin resembling cellulitis. Although usually tender, it can be asymptomatic and does not cause fever. Carcinoma erysipeloides is most commonly found on the chest. It may appear within a scar, involve an arm, or uncommonly, the head and neck region. In cases of breast cancer, the other breast may become involved. 2
The edge of a patch of carcinoma erysipeloides may be distinctly raised, red and swollen due to tumour cells blocking the lymphatic vessels and the release of cytokines.3
Carcinoma erysipeloides tends to occurs near the primary tumour. Signs that the cancer has spread to the skin include:
- A firm, round or oval, mobile, non-painful nodule
- Carcinoma en cuirasse, also called sclerodermoid carcinoma: indurated scar-like plaques due to cancer cells infiltrating collagen
- Carcinoma telangiectoides: red patches with numerous blood vessels (telangiectases) or lymphatic vessels (lymphangiectasia) due to infiltration by cancer cells.
What causes carcinoma erysipeloides?
Most cases of carcinoma erysipeloides are due to underlying adenocarcinoma, most commonly adenocarcinoma of the breast.4 It has also been described with melanoma, and tumours of the parotid gland, thyroid, larynx, lung, fallopian tube, cervix, ovary, colony, prostate, pancreas and stomach.4-5 Rarely it can be the first sign of the tumour.4
Carcinoma erysipeloides usually appears after chemotherapy, radiotherapy or surgery to remove the tumour and/or local lymph nodes. It is thought that these treatments may lead to shedding of the tumor cells through the lymphatics.6
How do you diagnose carcinoma erysipeloides?
Management of carcinoma erysipeloides
It is not possible to remove carcinoma erysipeloides by surgery. Palliative treatment with chemo-radiotherapy may cause regression.9 The prognosis of a patient with carcinoma erysipeloides is generally poor.