A 38-year-old man presented with neck swelling and pain of several weeks duration. At physical examination, a right sided neck mass is found. Surgical resection of the mass was performed. What's your diagnosis?

A 67-year-old man presents with symptoms of severe abdominal pain. A clinical diagnosis of appendicitis is made and surgical resection of the appendix is performed.

A 72-year-old man presents with symptoms of abdominal pain and blood in his stools. A biopsy of the colon is obtained.

An asymptomatic, 57-year-old man underwent a prostatic biopsy.

By history, the affected skin occasionally wept clear fluid that formed a superficial crust. With what specific disorder does the patient most likely suffer?

A 12-year-old girl presented with symptoms of chest pain and dyspnea of several weeks duration. Radiological evaluation revealed the presence of a chest wall tumor. Resection of the tumor was performed. What is your diagnosis?

A 48-year-old man presented with symptoms of abdominal pain and fullness. At physical examination an abdominal mass was palpated. Radiologically, the mass appeared to be in the retroperitoneum. Resection of the mass was performed.

A hematologically stable CML patient developed a solitary, exquisitely painful ulceration, 7 cm × 5 cm, located on the mid-medial foreleg. There was never any evidence of venous insufficiency. The patient denied the possibility of a spider bite. What is the likely cause of this lesion?

A 53-year-old man presents with painful swelling on the right side of his neck. At physical examination, a small tumor nodule is found. What's your diagnosis?

A 35-year-old man presents with axillary lymphadenopathy. The patient is otherwise asymptomatic and does not have any history of previous illness.

A 52-year-old woman presents with symptoms of neck pain and headache. Radiographic imaging showed the presence of an intracranial mass.

A 56-year-old Caucasian male presented with an approximately 25-year history of gradually enlarging, asymptomatic scalp nodules. This patient is at risk for developing which of the following?

A 47-year-old woman presents with symptoms of cough, dyspnea, and chest pain. Chest radiographic imaging shows the presence of a bronchial mass.

Following the discovery of six intracerebral metastases, a 40-year-old man who had been previously treated for stage II non–small-cell lung cancer was placed on phenytoin, and whole-brain radiotherapy with gefitinib was started. Shortly afterward he developed a fever, and a rash involving the radiotherapy port that soon spread.

A 46-year-old man presented with a history of dyspnea and pain of several days. The patient does not disclose any pertinent history and has been well otherwise. Radiographic evaluation revealed the presence of a laryngeal mass. Surgical resection was performed.

A 48-year-old woman presents with history of hematuria and abdominal pain spanning several days. The patient does not have any previous tumor history. Radiological evaluation revealed the presence of a large mass in the upper pole of the right kidney. Right nephrectomy was performed.

A 57-year-old man presented with symptoms of dyspnea and chest pain. Radiographic evaluation disclosed the presence of pleural effusion and thickening of the pleura. A biopsy of the pleura was obtained.

During a routine physical examination a 43-year-old man is found to have an anterior mediastinal mass on chest radiographic studies. The patient is otherwise healthy and does not have any history of any tumor elsewhere. Resection of the tumor was performed.

A 34-year-old man presented with pain in the right thigh. At physical examination, a soft tissue mass was detected. Resection of the mass was performed.

A 49-year-old African-American woman noted the gradual onset of reddish-blue discoloration under one fingernail. There was both spontaneous pain and exquisite tenderness to palpation.

A 48-year-old woman presented with symptoms of abdominal pain. Diagnostic imaging techniques revealed the presence of a mass in the duodenum. Resection of the mass was performed.

An 18-year-old man presented with symptoms of pain in his right leg just above the knee. The patient does not have any history of trauma or any other medical condition. Radiographic examination shows the presence of a destructive mass involving the right femur.

A 28-year-old woman presented with symptoms of abdominal pain, dyspepsia, and nausea. At physical examination, an abdominal mass was palpated. Radiological evaluation showed the presence of a mass in the pancreas. Resection of the mass was performed.

A 54-year-old woman, previously in excellent health, noted the insidious development of abundant, thin, and softly textured, nonpigmented hair on her ears and nose. A detailed review of systems was entirely negative, and both a complete blood count and automated routine biochemistry panel were normal. Gynecologic examination, including a pap smear, was normal one year prior to presentation. The patient was a lifelong nonsmoker and nondrinker. Family history was negative for cancer.

A 43-year-old woman presented with symptoms of abdominal pain and uterine bleeding. At physical examination, a palpable mass was present in the right lower abdominal quadrant.