On initial evaluation of a patient, an orthotist finds weakness in plantarflexion, forefoot inversion, and toe flexion. The orthotist should suspect involvement of which of the following peripheral nerves?

A child with CP has involuntary writhing movements that worsen with stress and disappear during sleep. Which CP type is most likely?

For the patient in the previous question, she will have increased risk for developing which of the following malignancies?

A worker develops weakness in forearm flexion and sensory loss along the lateral forearm. Which nerve is injured?

All of the following polyps are hamartomatous polyps EXCEPT:

A 55-year-old man has a 5-cm submucosal jejunal mass and is resected.  The specimen shows nests and trabeculae of round cells with pink granular cytoplasm and salt-and-pepper chromatin.  His serum 5-hydroxyindoleacetic acid (5-HIAA) level is markedly increased.   Which of the following embryologic derivatives is most likely related to the cells in the mass?

A 67-year-old man has had a 4-kg weight loss and nausea for the past 6 months.  The upper endoscopy shows that the entire gastric mucosa is eroded and has an erythematous cobblestone appearance.  The gastrectomy specimen shows small and shrunken stomach with a rigid thickened wall.  Which of the following is most likely the diagnosis?

A 50-year old woman presents with weight loss, diarrhea and peripheral edema.  During the workup, the physician suspects Menetrier disease.  All of the following statements are true regarding this condition EXCEPT:

A 30-year-old man has sudden onset of hematemesis after he consumed large amount of alcohol.  Upper gastroesophageal endoscopy shows longitudinal tears at the gastroesophageal junction.  What is the most likely mechanism to cause his hematemesis?

Which dermatome is associated with the area that includes the umbilicus?