A<unk> that is > or equal to 1 cm is referred to as a nodule. There are many differential diagnoses for nodules as they can be subcutaneous, intraepidermal, dermal or exophytic. To obtain the correct diagnosis it is importnat to observe the growth rate, color, symptoms and any underlying conditions that may have caused the nodules.
Nodular lesions
Janeway lesions
Papulosquamous lesions
Vesicular and bullous lesions
Pigmented lesions
Cyclops lesion
Trousseau sign of malignancy
Sister Mary Joseph nodule