Common skin lesions. Dermal and subcutaneous lesions
Neurofibromas are spindle cell tumours and present as soft to firm, single or multiple dermal nodules that may be pedunculated. Sometimes it is possible to invaginate the lesions because …
Nodular panniculitis - DermNet
The mechanism of nodular panniculitis is that white blood cells infiltrate and damage the subcutaneous fat, causing necrosis and fibrosis. What are the clinical features of nodular …
Erythema nodosum: Symptoms, Causes, and Management
2018年6月27日 · Erythema nodosum presents with tender bilateral erythematous subcutaneous nodules 3–20 cm in diameter erupting over one to several weeks. They are accompanied by …
Darier-Roussy subcutaneous sarcoidosis - DermNet
Despite intensive investigation, the cause of Darier-Roussy subcutaneous nodules and other forms of cutaneous sarcoidosis is unknown. Sarcoidosis is recognised as a chronic cell …
Rheumatic fever, erythema marginatum - DermNet
Subcutaneous nodules (small lumps under the skin) – These are uncommon, occurring in less than 2% of patients with ARF. The painless nodules are found over joints (such as the elbows, …
Subcutaneous fat necrosis of the newborn - DermNet
The nodules of subcutaneous fat necrosis may be painful. They may last from weeks to months before they disappear. Occasionally the infant may be left with a dimpled area of reduced fat. …
Sporotrichoid spread - DermNet
Sporotrichoid lymphocutaneous infection is characterised by the appearance of subcutaneous nodules that progress along dermal and lymphatic vessels. It is also called nodular …
Nodular vasculitis - DermNet
Nodules may continue to erupt at irregular intervals over months or years. How is nodular vasculitis diagnosed? Skin biopsy of the nodules reveals panniculitis , with varying degrees of …
Scalp Tumours and Cysts: A Complete Overview - DermNet
Papules, plaques, or nodules derived from the epithelial terminal duct which histologically differentiate into poroid (glandular duct) cells. Lipoma. Adipocytes. Smooth round collection of …
Common benign skin lesions - DermNet
Which are the common subcutaneous lesions? The lipoma is the most common benign soft-tissue tumour. A lipoma presents as a soft, rubbery, freely mobile mass that is usually found on the …