Image diagnoses for "black"
81 results with 226 images

Angiosarcoma, epitheloid. condition after surgical removal of the nail for tissue sampling. bleeding tumour grown under the big toe nail, livid to brownish-red. rapid organ metastasis with lethal outcome within 6 months.

hematoma, nail hematoma. blue-blackish, sharply defined pigmentation (here of the big toe nail) due to a previous traumatic event. no distal stripy nail discoloration. the absence of distal stripy nail changes excludes the important differential diagnoses "subungual malignant melanoma" and "subungual melanocytic nevus".

Nail hematoma: sharply limited brownish discoloration of the nail; no streaky distal pigmentation of the nail (important differential diagnostic distinction to a malignant melanoma).

Hematoma, nail hematoma. reflected light microscopy with blue, sharply defined discoloration of the nail.

Hematoma, nail hematoma. Incident light microscopy with red-blue discoloration of the nail.

Blue nevus: Large blue nevus (so-called Mongolian spot) with a deep dark melanocytic nevus.

Naevus verrucosus (series): Control in the 8th year of life.

Naevus verrucosus with bizarre arrangement along the Blaschko lines.

Naevus verrucosus: Illustrations in the course

Naevus verrucosus: Illustration in the course.

Nail hematoma: since exactly 6 weeks existing (trauma reminding), sharply forward limited blue-black discoloration of the big toe nail with discoloration of the epinychium; the sharp, here diagonally running dividing line without distal stripe-shaped discoloration of the nail matrix excludes a malignant melanoma!

Nail hematoma: since exactly 6 weeks existing (trauma recallable), sharply forward limited blue-black discoloration of the big toe nail (marked by arrows and line) with discoloration of the epinychium (circle); arrow (right) indicates a streaky (still red) apparently fresher bleeding

Comedones and cysts in severe acne comedonica: numerous single (horizontal arrows) and double comedones (vertical arrows). circles: cysts.

Mlelanom malignes acrolentiginous: Subungual malignant melanoma. Characteristic is the stripy growth through the entire length of the nail. The arrow marks the so-called Hutchinson sign.

Melanoma, malignant, acrolentiginous, subungual and paraungual, black pigmented tumor in the fingernail area, advanced stage with destruction of the nail.

Melanonychia striata longitudinalis: DD- subungual malignant melanoma; look for the discoloration of the cuticle (so-called Hutchinson's sign), as an indication of involvement of the nail root

Melanoma, malignant, acrolentiginous: Complete destruction of the nail organ by tumor growth.

Melanoma, malignant, acrolentiginous: Complete destruction of the nail organ by tumor growth.

Keratosis follicularis: Comedone-like, follicularly bound papules in the area of the thigh.

Comedone-like keratosis follicularis (see there): in contrast to classical comedones, keratosis follicularis lacks sebaceous gland hyperplasia ; keratosis follicularis is a follicular, "dry horn graft" which does not occur in the seborrhoeic zones but mainly on the side of the extremities.

Keratosis follicularis. Comedone-like, follicular horny papules on the buttocks.

Comedo: multiple, chronically stationary, 0.5-1 mm large, firm, asymptomatic, grey, rough follicular papules with enlarged follicles, localized in the nasolabial fold; sebaceous content can be expressed on pressure.

Comedo (giant comedo): approx. 2.0 cm large, firm knot with a black, keratotic centre about 0.3 cm in size.

basal cell carcinoma (overview): basal cell carcinoma pigmented. superficial (superficial), multi-segmental, symptomless, partly smooth, partly scaly plaque. arrows mark the pigmented nodular structure in the marginal area. encircles the prominent marginal structure in the "depigmented" part of the tumor. differential diagnosis excludes a malignant melanoma of the SSM type.

Acne cystica: In acne-typical distribution besides numerous (black) comedones and bridge comedones, numerous skin-coloured sebum retention cysts.