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Endoscopic modified lothrop procedure: A radiographic anatomic study
Author(s) -
Burkart Collin M.,
Zimmer Lee A.
Publication year - 2011
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1002/lary.21168
Subject(s) - frontal sinus , sagittal plane , medicine , anatomy , skull , radiography , nuclear medicine , computed tomography , surgery
Objective: Radiographic frontal recess and sinus anatomic measurements were obtained to evaluate the feasibility of the endoscopic modified Lothrop procedure. Study Design: Computed tomography anatomic study. Materials and Methods: Computed tomography (CT) scans from 97 patients, 39 male and 58 female, were analyzed in the sagittal plane. Four anatomic parameters were measured 1) midsagittal thickness of the nasal beak, 2) midsagittal distance from nasal beak to skull base, 3) accessible dimension of the frontal recess, and 4) anterior to posterior (AP) dimension of the frontal sinus. Results: The average and range of each parameter are as follows: 1) midsagittal nasal beak thickness 0.8 cm (0.3–1.4 cm); 2) midsagittal beak to skull base 1.0 cm (0.4–2.4 cm); 3) left and right accessible dimension 0.8 cm (0.3–1.4 cm) and 0.8 cm (0.4–1.5 cm), respectively; 4) left and right AP diameter of the frontal sinus 1.0 cm (0.3–1.8 cm) and 1.1 cm (0.4–1.9 cm), respectively. There is statistically significant differences between the accessible dimension and AP dimension of the frontal sinus on male and female images. Discussion: Preoperative frontal recess and sinus measurements can aid in the selection of patients for the endoscopic modified Lothrop procedure. A significant portion of the population, especially women, had limiting anatomic factors potentially excluding this procedure. Laryngoscope, 2010