PMC2816344_01
Postexercise fascilitation and incremental response at high rate of stimuration in the abductor digiti minimi muscle. Note definite facilitation at high rate of stimulation is achieved by prolonged stimulation for 2 sec in second test. (A) Compound muscle action potential (CMAP) before exercise. (B) CMAP after 30 sec of exercise. (C) Response at 50/sec stimulation for 1 sec. (D) Response at 50/sec stimulation for 2 sec.
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F1
CMAP after short exercise, and 109% of incremental response at 50 Hz stimulation for 2 sec in ADM (Fig. 1). Chest radiography on admission revealed a nodule in right upper lung and chest CT disclosed a speculated, 1.4 cm-sized enhancing nodule and enlarged right upper paratracheal lymph node (Fig. 2A).
(A) CT scan of the chest shows a 1.4 cm nodule (arrow) in the posterior segment of right upper lobe. (B) Atypical carcinoid tumor with mosaic patterns separated by thin fibrovascular stroma. The tumor cells have central round nuclei with abundant cytoplasm (H&E x100).
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PMC2816344_01_jkms-19-753-g002.jpg
F2
CMAP after short exercise, and 109% of incremental response at 50 Hz stimulation for 2 sec in ADM (Fig. 1). Chest radiography on admission revealed a nodule in right upper lung and chest CT disclosed a speculated, 1.4 cm-sized enhancing nodule and enlarged right upper paratracheal lymph node (Fig. 2A). Immunohistochemical stains for neuroendocrine markers, such as chromogranin A, synaptophysin, and neuron-specific enolase were all positive and was finally interpreted as atypical carcinoid (Fig. 2B).