74 BASICS
Fig. 6.8.Sebaceous adenitis (Viszla) demonstrating the polycyclic pattern of alopecia and associated light
adherent scale.
(a)Fig. 6.9.Bowenoidin situcarcinoma (BISC). (a) Majority of BISC cases occur in dark-colored cats. (b) Appear-
ance of darkly pigmented macules leading to plaques in the preauricular region of the cat in (a). (c) Slightly ele-
vated, pigmented, slightly scaled lesions are often overlooked by the owner until an advanced stage; patches of
partial alopecia with hyperpigmentation in the preauricular region of this patient. (d) Hyperpigmented macules
leading to crusted plaques of BISC.