Nondecussating retinal-fugal fiber syndrome: Clinical and neuroimaging clues to diagnosis.

We report the clinical details and imaging findings for a case of nondecussating retinal-fugal fiber syndrome or isolated achiasma in a 4-year-old female child. Findings included the isolated absence of optic chiasm with unremarkable rest of the optic pathway and midline structures in a child presenting clinically with see-saw nystagmus. Clinically congenital see-saw nystagmus, "mirror reversal" of visual field representation and interocular ipsilateral asymmetry on monocular visual evoked potential point toward achiasma and warrant further evaluation with magnetic resonance imaging (MRI). Isolated achiasma is a rare condition that may remain undiagnosed unless MRI is done.

Perforated Littre's hernia diagnosed on imaging: case report and review of literature.

We report the clinical details and imaging findings of a case of perforated Littre's hernia presenting as lower abdominal wall cellulitis in a 50-year-old male. Findings included herniation of an oral contrast opacified blind-ending pouch arising from the anti-mesenteric border of the distal ileum into the right inguinal canal, with extravasation of oral contrast. There were adjacent inflammatory changes with subcutaneous emphysema extending up to the right anterior chest wall. Meckel's diverticulum is rarely diagnosed preoperatively on imaging. We highlight the importance of computed tomography in imaging Meckel's diverticulum.

Congenital duplication of mastoid segment of facial nerve: A rare case report.

Congenital duplication of facial nerve is a very rare anomaly commonly associated with inner and middle ear anomalies. There can be duplication of mastoid, tympanic, or labyrinthine segments. We describe duplication of mastoid segment of facial nerve in a young female who also showed middle ear anomalies and external auditory canal atresia.