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Table 3 Preoperative radiological staging and histopathological verification of lymph node metastasis in the mesorectum

From: Anorectal malignant melanoma: curative abdominoperineal resection: patient selection with 18F-FDG-PET/CT

 

Patient 1

Patient 2

Patient 3

Patient 4

Patient 5

Patient 6

 

Occurrence

Detected in

Occurrence

Detected in

Occurrence

Detected in

Occurrence

Detected in

Occurrence

Detected in

Occurrence

Detected in

  

CT

PET/CT

 

CT

PET/CT

 

CT

PET/CT

 

CT

PET/CT

 

CT

PET/CT

 

CT

PET/CT

Synchronous LNM

No

  

Yes

  

No

  

Yes

  

Yes

  

Yes

  

 Perirectal

  

Yes

X

X

  

Yes

X

X

  

Yes

X

X

 Inguinal right

  

Yes

Ø

X

  

  

  

  

 Iliacal right

  

  

  

  

Yes

Ø

X

  

 Inguinal left

  

Yes

X

X

  

Yes

X

X

  

  

 Iliacal left

  

  

  

  

  

  

LNM in histopathology

No

  

Yes

  

No

  

Yes

  

Yes

  

Yes

  

 Perirectal (LNM/resLN)

0/12

  

13/33

  

0/14

  

1/3

  

(3/21)a

  

1/5

  

Synchronous distant metastasis

No

  

Yes

  

No

  

Yes

  

No

  

No

  

 Lung/pleura

  

  

  

Yes

X

X

  

  

 Liver

  

Yes

Ø

X

  

  

  

  
  1. Detection of perirectal, inguinal, and iliacal lymph node metastases, as well as lung and liver metastases as depicted by contrast-enhanced CT and by 18F-FDG-PET/CT. Additionally, histopathologically verified lymph node metastases in relation to total count of examined lymph nodes are listed
  2. CT computed tomography, PET/CT 18F-FDG PET/CT, LNM lymph node metastasis, resLN total count of resected lymph nodes
  3. aMetachronous LNM, (X) metastatic lesions were detected, (Ø) metastatic lesions were not detected