Mutations in ALK and TSC1 in a gastrointestinal stromal tumor : a case report

BACKGROUND: Gastrointestinal stromal tumors rarely occur in children, but when they do, their biological behavior and histopathological patterns differ from those of adults.

CASE PRESENTATION: A 13-year-old boy with a gastrointestinal stromal tumor was characterized by a rare genetic mutation. The patient complained of "fatigue with intermittent abdominal pain for 1 month". According to the preoperative imaging examination, gastroscopy, and gastroscopic biopsy, the patient was diagnosed with a gastric stromal tumor. Postoperative pathology showed that the tumor cells were fusiform and ovoid, and mitotic figures were easily seen. Immunohistochemistry revealed that the tumor was S-100(+), SOX10(-), CD34(+), SMA(partially+), DOG-1(+), CD117(+), KI-67 (positive for 20% + of the subjects and 40% + of the hotspots), and SDHB(-). Genetic tests showed missense mutations in ALK and TSC1. With surgical treatment, the tumor was completely removed. The patient recovered well and was discharged on the ninth day after the operation. He is currently under follow-up.

CONCLUSIONS: In this case involving a patient with a gastrointestinal stromal tumor, immunohistochemistry indicated that the tumor was an "SDH-deficient type", and gene detection showed no KIT or PDGFRA mutation but rare ALK and TSC1 mutations, which adds to the knowledge of the types of gene mutations in children with gastrointestinal stromal tumors.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:21

Enthalten in:

BMC surgery - 21(2021), 1 vom: 20. Apr., Seite 202

Sprache:

Englisch

Beteiligte Personen:

Song, Qingzhi [VerfasserIn]
Li, Guan [VerfasserIn]
Li, Zhuofei [VerfasserIn]
Ao, Sheng [VerfasserIn]
Hou, Jianing [VerfasserIn]
Lv, Guoqing [VerfasserIn]

Links:

Volltext

Themen:

ALK
ALK protein, human
Anaplastic Lymphoma Kinase
Case Reports
EC 1.3.5.1
EC 1.3.99.1
EC 2.7.10.1
Gastrointestinal stromal tumor
Journal Article
Mutations
SDHB protein, human
Succinate Dehydrogenase
TSC1
TSC1 protein, human
Tuberous Sclerosis Complex 1 Protein

Anmerkungen:

Date Completed 26.04.2021

Date Revised 26.04.2021

published: Electronic

Citation Status MEDLINE

doi:

10.1186/s12893-021-01208-0

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM324335229