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 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_1_080212 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | lumps & bumps (plaques, nodules, tumors) | ||
| Body Site: | arm | Age: | 15 years | ||
| Contributor: | Katherine Puttgen, MD | ||||
| Description: | firm brown to violaceous nodule | ||||
| Comments: | This healthy adolescent girl complained of a few year history of this stable nodule which was intermittently itchy and uncomfortable, and which she requested to have removed. | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_1_070110 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | neoplasm, benign / hyperpigmentation | ||
| Body Site: | thigh | Age: | 52 years | ||
| Contributor: | Eric Ehrsam, MD | ||||
| Description: | flat topped 6 mm well demarcated brown papule with light brown-pink center | ||||
| Comments: | A 52-year-old man developed a pigmented papule of his right thigh. Dermoscopy (x20) revealed a central white patch surrounded by a brown pigment network typical of a dermatofibroma. The lesion was removed and pathology confirmed the diagnosis. | ||||
| Related Images: | dermatofibroma_2_070110 | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_2_070110 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | neoplasm, benign / hyperpigmentation | ||
| Body Site: | thigh | Age: | 52 years | ||
| Contributor: | Eric Ehrsam, MD | ||||
| Description: | Dermoscopy (x20) reveals a central white patch surrounded by a brown pigment network typical of a dermatofibroma. | ||||
| Comments: | A 52-year-old man developed a pigmented papule of his right thigh. The lesion was removed and pathology confirmed the diagnosis. | ||||
| Related Images: | dermatofibroma_1_070110 | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_aneurysmal_2_060801 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | neoplasm, fibrohistiocytic / neoplasm, benign | ||
| Body Site: | forearm | Age: | 49 years | ||
| Contributor: | Greg Hosler, MD, PhD | ||||
| Description: | The edge of the lesion shows more traditional collagen trapping by short spindled cells. Multinucleated giant cells with abundant pigment are scattered throughout the lesion. | ||||
| Comments: | This is an unusual variant of dermatofibroma, a benign fibrohistiocytic tumor. One can call it a hemosiderotic dermatofibroma or an aneurysmal dermatofibroma, depending on the relative contribution of the vascular component. The presence of pigment may scare the untrained eye, but this pigment is hemosiderin. The differential diagnosis would include a melanocytic or vascular lesion. One must look to the periphery of the lesion to find the more traditional patten of a dermatofibroma. | ||||
| Related Images: | dermatofibroma_aneurysmal_1_060801 | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_aneurysmal_1_060801 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | neoplasm, fibrohistiocytic / neoplasm, benign | ||
| Body Site: | forearm | Age: | 49 years | ||
| Contributor: | Greg Hosler, MD, PhD | ||||
| Description: | There is a fibrohistiocytic proliferation within the dermis. The overlying epidermis is mildly thinned with overlying scale. Within the proliferation, there are large cavernous blood-filled spaces. At the periphery of the lesion, the spindle cells trap collagen bundles. | ||||
| Comments: | This is an unusual variant of dermatofibroma, a benign fibrohistiocytic tumor. One can call it a hemosiderotic dermatofibroma or an aneurysmal dermatofibroma, depending on the relative contribution of the vascular component. The presence of pigment may scare the untrained eye, but this pigment is hemosiderin. The differential diagnosis would include a melanocytic or vascular lesion. One must look to the periphery of the lesion to find the more traditional patten of a dermatofibroma. | ||||
| Related Images: | dermatofibroma_aneurysmal_2_060801 | ||||
 © 2001-2009, DermAtlas | Image Name: | cellular_dermatofibroma_1_040730 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | neoplasm, benign | ||
| Body Site: | calf / leg | Age: | 50 years | ||
| Contributor: | Susan M Rabizadeh, MD | ||||
| Description: | 3 X 2 cm firm rubbery smooth topped pink-brown nodule with overlying scale | ||||
| Comments: | A healthy 50-year-old woman was evaluated for a slowly growing protuberant nodule on her left calf for 10-15 years. An excisional biopsy showed a cellular dermatofibroma. | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_2_040612 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | lumps & bumps (plaques, nodules, tumors) / hyperpigmentation | ||
| Body Site: | thigh | Age: | 13 years | ||
| Contributor: | Bernard Cohen, MD | ||||
| Description: | infiltrated 1 cm hyperpigmented nodule | ||||
| Comments: | This healthy adolescent had an itchy brown nodule on the posterior aspect of her left thigh. Histologic changes were typical of a dermatofibroma. | ||||
| Related Images: | dermatofibroma_1_040612 | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_1_040612 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | lumps & bumps (plaques, nodules, tumors) / hyperpigmentation / neoplasm, benign | ||
| Body Site: | thigh | Age: | 13 years | ||
| Contributor: | Bernard Cohen, MD | ||||
| Description: | infiltrated 1 cm hyperpigmented nodule | ||||
| Comments: | This healthy adolescent had an itchy brown nodule on the posterior aspect of her left thigh. Histologic changes were typical of a dermatofibroma. | ||||
| Related Images: | dermatofibroma_2_040612 | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_1_040301 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | lumps & bumps (plaques, nodules, tumors) / hyperpigmentation | ||
| Body Site: | hip | Age: | 19 years | ||
| Contributor: | Bernard Cohen, MD | ||||
| Description: | 1 cm dark browm nodule with well defined borders and grayish scaly center | ||||
| Comments: | This asymptomatic nodule appeared 4 years earlier on the upper thigh of a healthy 19-year-old boy. | ||||
 © 2001-2009, DermAtlas | Image Name: | dermatofibroma_1_010828 | File Type: | jpg | |
| Diagnosis: | DERMATOFIBROMA | Category: | lumps & bumps (plaques, nodules, tumors) | ||
| Body Site: | hip | Age: | 28 years | ||
| Contributor: | Bernard Cohen, MD | ||||
| Description: | 1 cm firm pale brown nodule | ||||
| Comments: | An asympromatic firm nodule had been present for 2 years on the hip of a healthy 28 year old woman. | ||||
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