Rhinitis in goat by Exserohilum rostratum (Setosphaeria rostrata)

ABSTRACT: We described a case of rhinitis caused by Exserohilum rostratum in 3-year-old, mixed breed, afemale goat, presenting with decreased appetite, dyspnea, and face deformity, evolution approximately 2 months. Necropsy revealed an extensive brownish yellow, irregular, ulcerated, friable focal lesion the nasal cavity. Purulent secretion drained from lesion, affecting vestibule extending caudal portion dorsal concha, associated meatus obstruction, destruction septum, bone palatine vomer. Histologically, was characterized as pyogranulomatous necrotizing osteomyelitis (multifocal to coalescent, sharp, chronic) myriad fungal structures. Morphologically, hyphae were thin, slightly tortuous, rarely septate walls (2-6 μm diameter), multiple chains individual conidia or groups (8-10 pigmented chlamydoconidia (7.5-15 diameter). They showed positive results for special histochemical techniques such Fontana Masson, methenamine silver nitrate Grocott, periodic acid Schiff. E. identified causative agent using microbiological isolation molecular identification. Pyrogranulomatous goats is unprecedented, being first animals Brazil phaeohyphomycosis goats.