Clinical features useful in distinguishing primary cutaneous anaplastic large cell lymphoma (ALCL) and lymphomatoid papulosis (LyP).
| Clinical Features . | LyP . | ALCL . |
|---|---|---|
| * > 3 cm more predictive of lymphoma; borderline lesions are usually intermediate in size, 1-2 cm. | ||
| Modified from Kinney and Kadin, 1999 42 | ||
| Type of lesion | Papules, nodules | Nodules, tumors |
| Number | Multiple | Single or grouped |
| Size | Usually <1 cm* | > 2 cm* |
| Sites of disease | Extremities, trunk | Extremities, head and neck |
| Regression | Yes, usually with a scar | ∼25% of cases |
| Clinical Features . | LyP . | ALCL . |
|---|---|---|
| * > 3 cm more predictive of lymphoma; borderline lesions are usually intermediate in size, 1-2 cm. | ||
| Modified from Kinney and Kadin, 1999 42 | ||
| Type of lesion | Papules, nodules | Nodules, tumors |
| Number | Multiple | Single or grouped |
| Size | Usually <1 cm* | > 2 cm* |
| Sites of disease | Extremities, trunk | Extremities, head and neck |
| Regression | Yes, usually with a scar | ∼25% of cases |