PMID- 38240258
OWN - NLM
STAT- MEDLINE
DCOM- 20240227
LR  - 20240227
IS  - 1943-572X (Electronic)
IS  - 0003-4894 (Linking)
VI  - 133
IP  - 4
DP  - 2024 Apr
TI  - Anatomic Relationship Between the Head of the Middle Turbinate and First 
      Olfactory Filum: A Radiographic Assessment.
PG  - 418-423
LID - 10.1177/00034894241227034 [doi]
AB  - BACKGROUND: The endoscopic modified Lothrop procedure (EMLP) has become a 
      frequently utilized procedure in rhinologic surgery. One of the most serious 
      complications of the procedure is cerebrospinal fluid leak, which may occur due 
      to lack of recognition of the anterior skull base in the region of the first 
      olfactory filum (FOF), or direct injury to the FOF itself. OBJECTIVES: To 
      evaluate the position of the head of the middle turbinate (MT) relative to the 
      FOF, which is an important landmark in the EMLP. METHODS: A series of previously 
      obtained patient computed tomography scans of the sinus were reviewed. A 
      reproducible process was implemented to obtain the measurements. First, the FOF 
      was identified on an axial series. Using a localization feature of the 
      radiographic software, this anteroposterior (AP) position could be visualized in 
      a coronal plane. Subsequently, the MT was viewed in a sagittal plane, where a 
      measurement between the head of the MT and the AP position of the FOF could be 
      performed. RESULTS: The AP distance between the head of the MT and the FOF was 
      measured in 92 patients. The head of the MT was either at or anterior to the FOF 
      in all measured subjects. The mean anterior distance of the head of the MT to FOF 
      was 3.6 mm (+/-2.4 mm) on the right, and 3.8 mm (+/-2.2 mm) on the left. The range in 
      AP distance was 0 to 12 mm. There was no significant difference in AP distance 
      between the head of the MT and FOF based on gender (P = .413) or diagnosis 
      (P = .254). CONCLUSIONS: In our study, the head of the MT was reliably at or 
      anterior to the FOF in all subjects, suggesting its utility as a fixed landmark 
      in endoscopic sinus surgery, particularly in the EMLP. LEVEL OF EVIDENCE: N/A.
FAU - Obermeyer, Isaac P
AU  - Obermeyer IP
AUID- ORCID: 0000-0003-1580-0345
AD  - Department of Otolaryngology-Head and Neck Surgery, University of California 
      Irvine, Irvine, CA, USA.
FAU - Nguyen, Cecilia H
AU  - Nguyen CH
AD  - School of Medicine, University of California Irvine, Irvine, CA, USA.
FAU - Yoo, Frederick
AU  - Yoo F
AD  - Department of Otolaryngology-Head and Neck Surgery, Kaiser Permanente, Anaheim, 
      CA, USA.
FAU - Garg, Rohit
AU  - Garg R
AD  - Department of Otolaryngology-Head and Neck Surgery, Kaiser Permanente, Anaheim, 
      CA, USA.
FAU - Kuan, Edward C
AU  - Kuan EC
AUID- ORCID: 0000-0003-3475-0718
AD  - Department of Otolaryngology-Head and Neck Surgery, University of California 
      Irvine, Irvine, CA, USA.
LA  - eng
PT  - Journal Article
DEP - 20240119
PL  - United States
TA  - Ann Otol Rhinol Laryngol
JT  - The Annals of otology, rhinology, and laryngology
JID - 0407300
SB  - IM
MH  - Humans
MH  - *Turbinates/diagnostic imaging/surgery
MH  - *Frontal Sinus/surgery
MH  - Tomography, X-Ray Computed
MH  - Endoscopy/methods
OTO - NOTNLM
OT  - Draf III
OT  - anterior skull base
OT  - cerebrospinal fluid leak
OT  - endoscopic modified Lothrop
OT  - first olfactory filum
OT  - frontal sinus
OT  - middle turbinate
OT  - revision sinus surgery
OT  - rhinology
OT  - sinus anatomy
COIS- Declaration of Conflicting InterestsThe author(s) declared no potential conflicts 
      of interest with respect to the research, authorship, and/or publication of this 
      article.
EDAT- 2024/01/19 12:44
MHDA- 2024/02/27 06:45
CRDT- 2024/01/19 08:14
PHST- 2024/02/27 06:45 [medline]
PHST- 2024/01/19 12:44 [pubmed]
PHST- 2024/01/19 08:14 [entrez]
AID - 10.1177/00034894241227034 [doi]
PST - ppublish
SO  - Ann Otol Rhinol Laryngol. 2024 Apr;133(4):418-423. doi: 
      10.1177/00034894241227034. Epub 2024 Jan 19.