Article Figures & Data
Figures
- FIG 1.
Transverse histopathologic section of the hypopharynx of a full-term fetus at the level of the cricoid cartilage shows the locations of the PCVP and the PPVP. Reproduced from Butler5 with permission from BMJ Publishing Group Ltd.
- FIG 2.
Labeled (A) and unlabeled (B) axial neck CT images with contrast at the level of the cricoarytenoid joints in a patient without visible PLVP demonstrate the expected locations of the PCVP (asterisk, A) between the larynx anteriorly and the hypopharyngeal mucosa (dashed line, A) posteriorly, and the PPVP (pound sign, A) between the hypopharyngeal mucosa anteriorly and the inferior constrictor musculature (solid line, A) posteriorly. Axial neck CT images with contrast in 2 additional patients (C and D) demonstrate visible PCVP (arrows, C) and visible PPVP (arrows, D).
- FIG 3.
Axial contrast-enhanced neck CT images obtained before (A and C) and after (B and D) definitive radiation therapy for laryngeal squamous cell carcinoma (arrow, A). Posttreatment images demonstrate a substantial decrease in size of the treated tumor (arrow, B) as well as prominent PCVP (circle, D) that was not definitively identifiable on the baseline pretreatment neck CT (circle, C). The prominent PCVP (circle, D) was described as suspicious for progressive neoplasm but confirmed to be vascular after 22 months of imaging follow-up.
- FIG 4.
Axial contrast-enhanced neck CT images obtained in 3 different patients demonstrate representative images of the PCVP (arrows, A–C) at the cricoid cartilage level (A), the arytenoid cartilage level (B), and the supra-arytenoid level (C).
- FIG 5.
Axial contrast-enhanced neck CT images in 3 different patients demonstrate representative examples of bilobed (arrows, A), dot-dash (arrows, B), and linear (arrows, C) PCVP morphology.
- FIG 6.
Axial contrast-enhanced neck CT images in 3 different patients demonstrate representative examples of linear (arrows, A), dot-dash (arrows, B), and bilobed (arrows, C) PPVP morphology.
Tables
Laryngeal Cancer Lymphoma P-Value Sex Male 33 (67%) 33 (67%) 1.00 Female 16 (33%) 16 (33%) Age (yr) Mean [SD] 58.9 [11.0] 58.9 [11.1] 1.00 Minimum 25 25 Maximum 83 84 Smoking history Yes 47 (96%) 26 (53%) <.001 No 2 (4%) 23 (47%) Radiation dose (Gy) Median 70.0 NA Minimum 64.0 NA Maximum 70.2 NA Neck CTs Total 222 226 Per patient (mean) (SD) 4.5 (2.8) 4.6 (2.7) .88 Minimum 2 2 Maximum 16 14 Months of CT follow-upa Total 1005 1835 Mean (SD) 20.5 (13.5) 37.4 (31.4) <.001 Minimum 4 1 Maximum 59 162 Note:—NA indicates not applicable.
↵a For patients with laryngeal cancer, follow-up ended when either no more neck CTs were available or the patient underwent salvage laryngectomy.
- Table 2:
Visibility of PLVP within the study groups with respect to patient characteristics
Laryngeal Cancer Lymphoma PLVP Visible? Yes No P Yes No P Sex Male 23 10 .50 23 10 .29 Female 13 3 14 2 Age (yr) Mean [SD] 58.4 [11.5] 60.3 [10.0] .60 59.3 [11.6] 57.6 [9.6] .64 Smoking history Yes 34 13 1.00 17 9 .10 No 2 0 20 3 Radiation dose (Gy) Median (range) 70.0 (64.0–70) 70.0 (65.3–70.2) .26 NA NA NA Note:—NA indicates not applicable.
- Table 3:
Visibility of PCVP within the study groups with respect to patient characteristics
Laryngeal Cancer Lymphoma PCVP Visible? Yes No P Yes No P Sex Male 20 13 .36 23 10 .29 Female 12 4 14 2 Age (yr) Mean [SD] 57.3 [10.9] 61.9 [10.8] .17 59.3 [9.6] 57.6 [11.6] .64 Smoking history Yes 30 17 .54 17 9 .10 No 2 0 20 3 Radiation dose (Gy) Median (range) 70.0 (64.0–70) 70.0 (65.3–70.2) .57 NA NA NA Note:—NA indicates not applicable.
- Table 4:
Visibility of PPVP within the study groups with respect to patient characteristics
Laryngeal Cancer Lymphoma PPVP Visible? Yes No P Yes No P Sex Male 12 21 1.00 10 23 .01 Female 5 11 11 5 Age (yr) Mean [SD] 59.0 [13.9] 58.8 [9.3] .96 62.6 [10.9] 56.1 [10.6] .04 Smoking history Yes 16 31 1.00 8 18 .09 No 1 1 13 10 Smoking history Median (range) 70.0 (64.0–70) 70.0 (65.3–70.2) .06 NA NA NA Note:—NA indicates not applicable.
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