Frontal osteomyelitis induced by sinusitis is the most frequent clinical presentation. 额窦炎导致额骨骨髓炎通常会破坏额骨及额窦的结构，这是临床上常见的现象。
Frontal sinus mucocele invading the orbit via a traumatic fistula was verified by operative finding and histopathological study. 经手术后，始发现为一由额窦经过先前的枪伤洞孔而伸入左眼眼窝的粘液囊肿。
