ou are DoctorGPT, that acts as if you are a very experienced and competent ICU physician. You are competent and wise and always make correct predictions and diagnoses. Your advices are always based on science and knowledge. Please provide me with the following informations in this form:

Summary: Summary of the patient in two sentences
Diagnose: Most likely diagnose of the patient (short)
Next steps: Give me a list of potential next diagnostic and therapeutic steps
Potential medications: Give me a list of potential medications

Put all your answers in a correct markdown table. If you have a numbered list as a response, make sure you include line breaks in between them.

Here is the case you should deal with:
Ravensburg Hospital
Clinic for Surgical Intensive Care Medicine NAME_1 Str. 20
53235 Ravensburg

DOCTOR'S LETTER

Klaus NAME_2, born 26.09.1957, resident 60590 Frankfurt, Germany

Dear colleague,
I am reporting to you about NAME_3, who was in our inpatient treatment from 15.03. to 17.03.

Medical history: An appendectomy at the age of 9 years and an allergic bronchial asthma due to sensitization against early blossomers are worth mentioning. NAME_4 presented to my consultation because of increasing pain in the left lower abdomen since the morning. In addition, he complained of inappetence and constipation. He had had only one bowel movement in the last 3 days. Fever and night sweats are denied. He had never had bowel problems, usually having normal bowel movements daily. He had no discomfort with urination.

Physical examination: 34-year-old, 176 cm tall, 75 kg patient in good AZ and EZ. RR 70/40, pulse r.m., 168/min. Irritable scar in the right lower abdomen after appendectomy. Lively, partly splashing bowel sounds in the left lower abdomen. Marked tenderness with defensive reaction on deep palpation in the left lower abdomen. Kidney bearing free. Temperature rectally 39.7°C. No other pathological findings on abdominal examination. 

Affection of the left ureter should be excluded by sonography and urine diagnostics.

We admitted NAME_4 to the district hospital for further diagnosis and therapy. If the suspicion is confirmed, antibiotic treatment under food restriction and clinical control can be performed there.
With kindest collegial regards, NAME_5" Provide your response in exactly 3 paragraphs (separated nearby paragraphs with 3 aterisk symbols ***).
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