Retrievable covered nitinol stents: Experiences in 108 patients with malignant esophageal strictures

Ho Young Song; Hee Lee Deok; Tae Seok Seo; Sung Bae Kim; Hwoon Yong Jung; Jong Hoon Kim; Seung Il Park

doi:10.1016/S1051-0443(07)61722-9

Retrievable covered nitinol stents: Experiences in 108 patients with malignant esophageal strictures

Ho Young Song, Hee Lee Deok, Tae Seok Seo, Sung Bae Kim, Hwoon Yong Jung, Jong Hoon Kim, Seung Il Park

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101 Citations (Scopus)

Abstract

PURPOSE: The authors report their experience with three types of retrievable covered nitinol stents in patients with malignant esophageal strictures. Materials AND METHODS: Three types of retrievable covered nitinol stents were designed. Type A stents were placed in 45 patients, type B stents were placed in 29 patients, and type C stents were placed in 34 patients. The stents were removed with use of a stent retrieval set under fluoroscopic guidance when the stents caused complications. Stent patency, symptom relief, survival rate, and complications were analyzed relative to stent type and radiation therapy. RESULTS: The timing of radiation and the stent type have significant effects on occurrence of complications such as stent migration and fistula formation (P = .002 and P = 0.029, respectively). Complications were significantly more frequent in patients with the type B stent than those with type A or type C stents (P = .008). Patients who underwent radiation therapy before stent placement or who underwent no radiation therapy experienced substantially less complications than those who underwent radiation therapy after stent placement (P = .005 and P < .001, respectively). The survival period was significantly longer in patients who underwent radiation therapy after stent placement than in the other groups (P = .034). Stents were removed from 15 patients (14%) 2 days to 16 weeks (mean, 4 weeks) after stent placement as a result of severe pain (n = 7), stent migration (n = 6), or stent deformity (n = 2). Stent removal was well tolerated in all patients. CONCLUSION: Use of retrievable covered nitinol stents seems to be a safe and effective method of treatment in patients with malignant esophageal strictures. However, removal of the stents was needed in 14% of the patients because of complications. Patients who underwent radiation therapy after stent placement and those with the type B stent experienced more complications than other patients.

Original language	English
Pages (from-to)	285-292
Number of pages	8
Journal	Journal of Vascular and Interventional Radiology
Volume	13
Issue number	3
DOIs	https://doi.org/10.1016/S1051-0443(07)61722-9
Publication status	Published - 2002

Bibliographical note

Funding Information:
The study was supported by a grant (#HMP-98-G-2-043) of the HAN (Highly Advanced National) Project, Ministry of Health and Welfare, Republic of Korea.

Keywords

Esophagus, stenosis or obstruction
Stents and prostheses

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging
Cardiology and Cardiovascular Medicine

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10.1016/S1051-0443(07)61722-9

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@article{75f19789105745dea5c206f3580b4cf9,

title = "Retrievable covered nitinol stents: Experiences in 108 patients with malignant esophageal strictures",

abstract = "PURPOSE: The authors report their experience with three types of retrievable covered nitinol stents in patients with malignant esophageal strictures. Materials AND METHODS: Three types of retrievable covered nitinol stents were designed. Type A stents were placed in 45 patients, type B stents were placed in 29 patients, and type C stents were placed in 34 patients. The stents were removed with use of a stent retrieval set under fluoroscopic guidance when the stents caused complications. Stent patency, symptom relief, survival rate, and complications were analyzed relative to stent type and radiation therapy. RESULTS: The timing of radiation and the stent type have significant effects on occurrence of complications such as stent migration and fistula formation (P = .002 and P = 0.029, respectively). Complications were significantly more frequent in patients with the type B stent than those with type A or type C stents (P = .008). Patients who underwent radiation therapy before stent placement or who underwent no radiation therapy experienced substantially less complications than those who underwent radiation therapy after stent placement (P = .005 and P < .001, respectively). The survival period was significantly longer in patients who underwent radiation therapy after stent placement than in the other groups (P = .034). Stents were removed from 15 patients (14%) 2 days to 16 weeks (mean, 4 weeks) after stent placement as a result of severe pain (n = 7), stent migration (n = 6), or stent deformity (n = 2). Stent removal was well tolerated in all patients. CONCLUSION: Use of retrievable covered nitinol stents seems to be a safe and effective method of treatment in patients with malignant esophageal strictures. However, removal of the stents was needed in 14% of the patients because of complications. Patients who underwent radiation therapy after stent placement and those with the type B stent experienced more complications than other patients.",

keywords = "Esophagus, stenosis or obstruction, Stents and prostheses",

author = "Song, {Ho Young} and Deok, {Hee Lee} and Seo, {Tae Seok} and Kim, {Sung Bae} and Jung, {Hwoon Yong} and Kim, {Jong Hoon} and Park, {Seung Il}",

note = "Funding Information: The study was supported by a grant (#HMP-98-G-2-043) of the HAN (Highly Advanced National) Project, Ministry of Health and Welfare, Republic of Korea. ",

year = "2002",

doi = "10.1016/S1051-0443(07)61722-9",

language = "English",

volume = "13",

pages = "285--292",

journal = "Journal of Vascular and Interventional Radiology",

issn = "1051-0443",

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number = "3",

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TY - JOUR

T1 - Retrievable covered nitinol stents

T2 - Experiences in 108 patients with malignant esophageal strictures

AU - Song, Ho Young

AU - Deok, Hee Lee

AU - Seo, Tae Seok

AU - Kim, Sung Bae

AU - Jung, Hwoon Yong

AU - Kim, Jong Hoon

AU - Park, Seung Il

N1 - Funding Information: The study was supported by a grant (#HMP-98-G-2-043) of the HAN (Highly Advanced National) Project, Ministry of Health and Welfare, Republic of Korea.

PY - 2002

Y1 - 2002

N2 - PURPOSE: The authors report their experience with three types of retrievable covered nitinol stents in patients with malignant esophageal strictures. Materials AND METHODS: Three types of retrievable covered nitinol stents were designed. Type A stents were placed in 45 patients, type B stents were placed in 29 patients, and type C stents were placed in 34 patients. The stents were removed with use of a stent retrieval set under fluoroscopic guidance when the stents caused complications. Stent patency, symptom relief, survival rate, and complications were analyzed relative to stent type and radiation therapy. RESULTS: The timing of radiation and the stent type have significant effects on occurrence of complications such as stent migration and fistula formation (P = .002 and P = 0.029, respectively). Complications were significantly more frequent in patients with the type B stent than those with type A or type C stents (P = .008). Patients who underwent radiation therapy before stent placement or who underwent no radiation therapy experienced substantially less complications than those who underwent radiation therapy after stent placement (P = .005 and P < .001, respectively). The survival period was significantly longer in patients who underwent radiation therapy after stent placement than in the other groups (P = .034). Stents were removed from 15 patients (14%) 2 days to 16 weeks (mean, 4 weeks) after stent placement as a result of severe pain (n = 7), stent migration (n = 6), or stent deformity (n = 2). Stent removal was well tolerated in all patients. CONCLUSION: Use of retrievable covered nitinol stents seems to be a safe and effective method of treatment in patients with malignant esophageal strictures. However, removal of the stents was needed in 14% of the patients because of complications. Patients who underwent radiation therapy after stent placement and those with the type B stent experienced more complications than other patients.

AB - PURPOSE: The authors report their experience with three types of retrievable covered nitinol stents in patients with malignant esophageal strictures. Materials AND METHODS: Three types of retrievable covered nitinol stents were designed. Type A stents were placed in 45 patients, type B stents were placed in 29 patients, and type C stents were placed in 34 patients. The stents were removed with use of a stent retrieval set under fluoroscopic guidance when the stents caused complications. Stent patency, symptom relief, survival rate, and complications were analyzed relative to stent type and radiation therapy. RESULTS: The timing of radiation and the stent type have significant effects on occurrence of complications such as stent migration and fistula formation (P = .002 and P = 0.029, respectively). Complications were significantly more frequent in patients with the type B stent than those with type A or type C stents (P = .008). Patients who underwent radiation therapy before stent placement or who underwent no radiation therapy experienced substantially less complications than those who underwent radiation therapy after stent placement (P = .005 and P < .001, respectively). The survival period was significantly longer in patients who underwent radiation therapy after stent placement than in the other groups (P = .034). Stents were removed from 15 patients (14%) 2 days to 16 weeks (mean, 4 weeks) after stent placement as a result of severe pain (n = 7), stent migration (n = 6), or stent deformity (n = 2). Stent removal was well tolerated in all patients. CONCLUSION: Use of retrievable covered nitinol stents seems to be a safe and effective method of treatment in patients with malignant esophageal strictures. However, removal of the stents was needed in 14% of the patients because of complications. Patients who underwent radiation therapy after stent placement and those with the type B stent experienced more complications than other patients.

KW - Esophagus, stenosis or obstruction

KW - Stents and prostheses

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U2 - 10.1016/S1051-0443(07)61722-9

DO - 10.1016/S1051-0443(07)61722-9

M3 - Article

C2 - 11875088

AN - SCOPUS:0036118330

SN - 1051-0443

VL - 13

SP - 285

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JO - Journal of Vascular and Interventional Radiology

JF - Journal of Vascular and Interventional Radiology

IS - 3

ER -

Retrievable covered nitinol stents: Experiences in 108 patients with malignant esophageal strictures

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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