Table 1.
Differential diagnoses of multiple pyogenic granulomas
| Examination | Dermoscopy | Histopathology | |
|---|---|---|---|
| Pyogenic granuloma | Usually single or rarely multiple reddish or skin-colored papulo-nodules | White/red homogenous stuctureless area, white rail lines, ulceration, white collarete | Vascular proliferation in lobular fashion. Fibrous septations, inflammation and edema. |
| Bacillary angiomatosis | Mutiple reddish or brown papules or subcutaneous lumps Dramatic response after antibiotic therapy |
- | Single or multinodular proliferations of capillaries with inflammatory infiltrate. Extracellular deposits of hemotoxylin grain material. Leucocytoclasis seen. |
| Kaposi's Sarcoma (nodular) | Numerous dome shaped skin colored or erythematous nodular lesions | Bluish reddish coloration, polychromatic rainbow pattern with surface scales and brown clods. | Honey comb like network of blood filled spaces/slits closely associated with spindle cells woven between delicate vascular spaces. |
| Angio-keratoma | Single or multiple reddish, bluish-black keratoticpapulo-nodules | Red lacunae, dark blue lacunae, whitish veil | Acanthosis, hyperkeratosis, multiple blood-filled ectatic, and congested thin-walled blood vessels in papillary dermis with normal deep dermis and subcutaneous tissue |