Image diagnoses for "Nail", "Macule", "black"
7 results with 23 images

nail hematoma: blue-black discoloration of the big toe nail. sharp limitation distally. no continuous nail pigmentation (see also inlet)

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!

DD: Melanoma malignes acrolentiginous: here: complicating onychomycosis with bleeding due to mold infestation; the inlet points proximally, a normally colored nail area; no Hutchinson phenomenon.

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).

nail hematoma: deep black discoloration of the nail plate. discoloration of the cuticle. the distal edge of the nail is not discolored.

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

Nail hematoma: reflected light microscopic image.

Striped black coloration of the big toe nail. The finding is unchanged since > 1 year. Here striped onychomycosis due to mold infestation of the nail. Diagnostic evidence is the normally colored proximal stripe above the nail dyschromia (see explanatory figure and reflected light microscopy).

Nail hematomas: bilateral discoloration of the big toe nails, sharply limited to the sides and to the front.

Hutchinson's sign in malignant acrolentiginous melanoma.

Melanoma malignes subunguales: Nail with stripy and periungual brown markings (Hutchinson's sign) in acrolentiginous malignant melanoma under the nail plate and in the nail bed (see Levit's ABC Rule)

DD: acrolentiginous malignant melanoma: here: Melanonychia longitudinalis:stripy (melanotic) nail pigmentation caused by a (still benign) pigment nevus localized in the (not visible) nail matrix. The anterior cut edge of the nail plate is pigment-bearing (marked with an arrow). An initial malignant melanomacan be excluded histologically with certainty.

Hutchinson's sign in malignant acrolentiginous melanoma.

Hematoma, nail hematoma: growing nail hematoma . left initial situation, right 8 weeks later. note: the nail matrix shows no discoloration at the cutting edge (marked by arrows)!

Nail green-blackish: discoloration of the nail matrix due to mould infestation.

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

Nail hematoma: sharply distally limited discoloration of the big toe nail. nail matrix at the distal cutting edge unchanged. no longitudinal striation of the nail.

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

Nail hematoma: stripy fresh nail hematoma, incident light microscopy

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

Differential diagnosis of "nail hematoma": All melanocytic neoplasms of the nail matrix lead to striped pigmentation of the nail plate.