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For 3 days, a 30-year-old man had had bilateral flank pain that radiated to the lower abdomen; gross hematuria had accompanied the pain for 1 day.

Three carbon dioxide laser treatments were used to remove a 35-year-old woman's tattoo.

Postoperative inflammation occurred shortly after this 25-year-old woman's earlobes were pierced.

A 63-year-old man's left eye was enucleated after it was severely injured in an automobile accident several years earlier. He chose not to have an artificial eye for his left socket. Thus, pseudoptosis developed, and the socket appeared sunken. The socket tissue was otherwise healthy and intact.

For several months, a 52-year-old woman had nausea, mild dysphagia with solid food, vague abdominal pain, and diarrhea. The patient denied hemoptysis, hematochezia, and melena. Lansoprazole and dicyclomine provided minimal relief of her symptoms.

A 62-year-old woman presented with a rash and intermittent pain of the right upper quadrant. The reticular, brown hyperpigmentation was also seen on her right flank and around the umbilicus. The patient reported that she often applied heating pads to these areas for pain relief.

After exposure to the sun, an erythematous, edematous, pruritic allergic reaction developed at the site of a 22-year-old man's new tattoo.

A 48-year-old woman was admitted to the hospital with deep venous thrombosis of the right leg. She had a history of non-Hodgkin lymphoma, which was in remission. The patient had been a heavy smoker for many years.

For 2 years, a 55-year-old woman's abdomen gradually enlarged; the pace of this growth had accelerated during the last 6 months. The patient, who had not seen a physician in 10 years, denied abdominal pain, nausea, vomiting, constipation, diarrhea, or any change in bowel habits. She had no shortness of breath or weakness. The patient reported no significant medical history, had no allergies, and took no medications. Her mother had died of ovarian cancer.

A 44-year-old man with a history of grand mal seizures experienced knee pain while walking. The pain was more severe in the left than in the right knee. The patient had a history of trauma to his left knee caused by falling during seizures.

This 14-year-old boy presented with slowly progressive hypopigmented lesions that had been present on the lower extremities for the previous 2 years.

A 45-year-old man sought medical advice after suffering for 6 months with recurrent pain and a purulent discharge at the sacrococcygeal region. Two weeks before this consultation, an abscess on the patient's right buttock had been drained by another physician. The patient had insulin-dependent diabetes mellitus for 5 years; his medical history was otherwise unremarkable.

The painless lesion on this 66-year-old woman's upper eyelid had been enlarging for the past couple of months and was now obscuring her vision.

This disorder occurs in fetal development, when the midgut supplied by the superior mesenteric artery grows too rapidly to be accommodated in the abdominal cavity. Prolapse into the umbilical cord occurs around the sixth week of gestation. Between the tenth and eleventh weeks, the midgut retracts from its location at the exocelomic umbilical stalk back into the abdominal cavity. During this return, the midgut undergoes a 270-degree counterclockwise rotation about the axis of the superior mesenteric artery, followed by fixation to the posterior abdominal wall. Malrotation results from failure of the midgut to properly rotate and affix itself to this wall. This disorder occurs approximately once in 500 live births.

Two enlarging, dry, tender lesions had developed on the right breast of a 62-year-old woman 2 years before she sought medical consultation. The patient had no other symptoms; she was taking metoprolol succinate for cardiac arrhythmias.

A 65-year-old man presented with bluish toes and petechiae on his toes and feet 3 days after having undergone renal angiography. Bilateral pitting pedal edema was noted, and laboratory tests revealed proteinuria, eosinophilia, and an erythrocyte sedimentation rate (ESR) of 65 mm/h.

Following a cholecystectomy, an indwelling urethral catheter was placed in a 51-year-old woman with urinary retention. Five days later, the patient complained of a burning sensation at the site. A rounded, swollen, hemorrhagic area surrounding the catheter was noted, and a urinary tract infection was diagnosed.

A 56-year-old man was admitted to the hospital with right lower lobe pneumonia, which was exacerbated by smoking-induced chronic obstructive pulmonary disease (COPD).