{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T18:30:34Z","timestamp":1790447434117,"version":"4.1.0"},"reference-count":15,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2009,2]]},"abstract":"<jats:p>Persisting embryonal infundibular recess (PEIR) is a rare anomaly of the third ventricular floor that has an unclear pathogenesis. In all 7 previously described cases, PEIR was present in adult patients and was invariably associated with hydrocephalus and, in 4 reported cases, with an empty sella. These associated findings led to speculations about the role of increased intraventricular pressure in the development of PEIR.<\/jats:p>\n<jats:p>In the present case, PEIR was found in a 24-year-old man without the presence of hydrocephalus or empty sella. Disorders of pituitary function had been present since childhood. Magnetic resonance imaging revealed a cystic expansion in an enlarged sella turcica. A communication between the third ventricle and the sellar cyst was suspected but not apparent. During transcranial surgery, the connection was confirmed. Later, higher-quality MR imaging investigations clearly showed a communication between the third ventricle and the sellar cyst through a channel in the tubular pituitary stalk. This observation and knowledge about the embryology of this region suggests that PEIR may be a developmental anomaly caused by failure of obliteration of the distal part of primary embryonal diencephalic evagination. Thus, PEIR is an extension of the third ventricular cavity into the sella.<\/jats:p>\n<jats:p>Although PEIR is a rare anomaly, it is important to identify when planning a procedure on cystic lesions of the sella. Because attempts at removal using the transsphenoidal approach would lead to a communication between the third ventricle and the nasal cavity, a watertight reconstruction of the sellar floor is necessary.<\/jats:p>","DOI":"10.3171\/2008.7.jns08287","type":"journal-article","created":{"date-parts":[[2008,10,24]],"date-time":"2008-10-24T14:49:30Z","timestamp":1224859770000},"page":"359-362","source":"Crossref","is-referenced-by-count":18,"title":["Persisting embryonal infundibular recess"],"prefix":"10.3171","volume":"110","author":[{"given":"Andrej","family":"\u0160te\u0148o","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Comenius University School of Medicine;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. John","family":"Popp","sequence":"additional","affiliation":[{"name":"Neurosciences Institute, Albany Medical Center, Albany, New York; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan","family":"Wolfsberger","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Medical University Vienna, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V\u00edt'azoslav","family":"Belan","sequence":"additional","affiliation":[{"name":"Department of Radiology, Slovak Medical University Bratislava, Slovakia;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juraj","family":"\u0160te\u0148o","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Comenius University School of Medicine;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-1100359","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"769","DOI":"10.3171\/jns.1978.49.5.0769","article-title":"Asymptomatic persistence of infundibularis recessus. 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