Aneurysmal dermatofibroma (AD) or aneurysmal fibrous histiocytoma (AFH) is a relatively rare form of histiocytoma representing less than 2% of total cases. It shares many clinical and dermoscopic similarities with skin tumors, especially malignant melanoma and Kaposi's sarcoma, which can make differ …

The clinical presentation of aneurysmal dermatofibroma is a rapidly growing blue-brown nodule. Periods of rapid growth are secondary to haemorrhage into the lesion. These tumours have a high recurrence rate and there is a report of aneurysmal dermatofibroma with …

2009年2月28日 · Aneurysmal benign fibrous histiocytoma is an uncommon pathologic variant of dermatofibroma. In addition to the features of a typical dermatofibroma, it has large cleft-like or cavernous blood-filled spaces with numerous hemosiderin pigments.

2024年2月29日 · Aneurysmal dermatofibroma: Aneurysmal dermatofibroma is a rare type of mesenchymal tumor originating from fibroblast and histiocytic cells within the dermal layer of the skin. This variant typically presents as blue, red, or purple papules commonly found on …

2022年4月11日 · Aneurysmal and hemosiderotic variants are both characterized by numerous multinucleate cells and prominent hemosiderin deposition due to red blood cell extravasation; distinction between these two is the pseudovascular spaces with blood in aneurysmal type (Histopathology 1995;26:323)

2023年10月28日 · Objectives: Aneurysmal dermatofibroma (ADF) and hemosiderotic dermatofibroma (HDF) are rare variants of dermatofibroma (DF) characterized by distinct histologic features. While HDF is traditionally considered a precursor to ADF, supporting evidence is limited, and the etiology remains unclear.

Aneurysmal fibrous histiocytoma was first described by Santa Cruz et al. 8 This variant usually represents less than 2% of dermatofibromas. 3 Its clinical presentation can be slightly different from that of the common histiocytoma, and usually consists of a blue-brown nodule on the limbs. 3 Rapid growth due to extensive hemorrhage can ...

Background: Aneurysmal dermatofibroma is a variant of dermatofibroma, which has a cleft-like cavernous blood-filled space in the tumor. It appears as a single reddish black tumor with variable levels of pain and size from its bleeding. This simulates the melanocytic lesions.

A distinct variant of benign fibrous histiocytoma (BFH) characterised by slow growing nodules with central cystic haemorrhage that imparts a blue-brown colour, which may result in clinical misdiagnosis as melanoma or a vascular lesion. Rapid growth and pain have been described in aneurysmal BFH. Segen's Medical Dictionary. © 2012 Farlex, Inc.

Aneurysmatic dermatofibroma represents approximately 1.7% of all types of dermatofibromas [ 1 ]. Like any dermatofibroma, this subtype may appear after local trauma. Its clinical diagnosis can be difficult due to its resemblance to malignant tumors, such as Kaposi sarcoma, angiomatoid malignant fibrous histiocytoma and melanoma [ 2 ].