Diagnosis of metastatic carcinoid in mesenteric lymph node by fine needle aspiration cytology.
Although carcinoid tumor is a relatively common neoplasm in surgical pathology, fine needle aspiration cytology (FNAC) as a method of primary diagnosis has only been reported a few times. We report the case of a 55-year-old male patient who presented with colicky pain in the abdomen and a vague mass in the right lumbar region. Ultrasonographic study showed an enlarged mesenteric lymph node. Ultrasonography-guided FNAC revealed cellular smears with neuroendocrine cellular arrangement and morphology. The cytomorphologic characteristics of carcinoid tumors are distinctive enough for diagnosis. A diagnosis of metastatic carcinoid was given. 5-hydroxyindolacetic acid in 24-hour urine turned out to be high. Histopathology and immunohistochemistry studies also confirmed the diagnosis. Thus, FNAC can be a useful and safe tool in the diagnosis of carcinoid tumors.
Naniwadekar
Manjiri Ramchandra
MR
Department of Pathology, Krishna Institute of Medical Sciences University, Karad, India. man_nan@rediffmail.com
Desai
S R
SR
Dombale
V D
VD
Kulkarni
S R
SR
D015746:Abdominal Pain / Q000209:etiology; D044963:Biopsy, Fine-Needle; D002276:Carcinoid Tumor / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology / Q000556:secondary*; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000652:urine; D008198:Lymph Nodes / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D008643:Mesentery / Q000000981:diagnostic imaging / Q000473:pathology*; D008875:Middle Aged; D014463:Ultrasonography
D006897:Hydroxyindoleacetic Acid