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Whipple’s Procedure
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Appendix Cancer & PMP
Rare Abdominal Cancers — Overview
A significant number of abdominal malignancies fall outside the common categories of colorectal, gastric, and pancreatic cancer — yet require the same or greater level of surgical expertise and multidisciplinary planning. These include peritoneal mesothelioma, adrenocortical carcinoma (ACC), primary peritoneal carcinoma (PPC), desmoplastic small round cell tumour (DSRCT), malignant paraganglioma, retroperitoneal lymphoma, and others.
Many patients with these rare tumours struggle to receive a timely diagnosis and appropriate treatment because most centres see too few cases to develop expertise. My training at Medizinische Hochschule Hannover — one of Europe’s leading centres for peritoneal surface oncology — exposed me to the full spectrum of these rare entities, and I am able to provide specialist evaluation and surgical management.
The common thread across all rare abdominal cancers is that surgical expertise matters enormously — the initial surgical approach can be the difference between cure and lifelong palliation. Do not accept a plan without seeking a second opinion from a specialist in abdominal oncological surgery.
At a Glance
Common Presentations
Rare abdominal cancers often present with non-specific symptoms — diagnosis requires awareness and specialist input.
Progressive distension from fluid accumulation — common in peritoneal mesothelioma and PPC.
Palpable retroperitoneal or adrenal mass often incidentally found on CT.
Adrenal mass found on CT — requires functional workup before any surgery.
Constitutional symptoms from advanced disease or hormonal excess.
Rare histological diagnosis on biopsy requiring specialist interpretation and management planning.
Hypertension, Cushing’s features, or virilisation from hormonally active adrenal tumours.
Our Approach to Rare Abdominal Cancers
For peritoneal mesothelioma — the most important rare peritoneal malignancy — CRS + HIPEC has transformed the disease from uniformly fatal to a condition where median survival exceeds 5 years in selected patients, with long-term survivors documented. Eligibility criteria are similar to other peritoneal malignancies: adequate performance status, absence of significant pleural disease, and complete cytoreduction achievable.
For adrenocortical carcinoma, radical adrenalectomy with en-bloc resection of any involved adjacent structures is the only curative treatment. Laparoscopic adrenalectomy is contraindicated for ACC — open surgery with adequate margins is required. Mitotane (adrenolytic drug) is used as adjuvant treatment and for metastatic disease. For Stage IV ACC, multimodal treatment combining surgery with mitotane, EDP chemotherapy, and targeted approaches is discussed at our MDT.
For any rare abdominal cancer, my recommendation is the same: come for a specialist consultation before committing to any surgical or systemic treatment plan. Bring all imaging, pathology, and previous operative notes. An hour of specialist evaluation can completely change the trajectory of treatment — and in rare cancers, expertise is scarce enough that this visit can make a life-or-death difference.
Peritoneal surface surgery for mesothelioma, PPC, and other rare peritoneal malignancies.
En-bloc pelvic resection for rare advanced pelvic malignancies.
Expertise You Can Trust
Dr. Mohammed Imaduddin brings internationally trained surgical skills and a patient-first philosophy to every case.
Frequently Asked Questions
Key questions from patients facing rare and unusual abdominal cancer diagnoses.
What is peritoneal mesothelioma and can it be treated?
I have an adrenal mass — should I worry?
What is DSRCT and what are the treatment options?
Can I get a second opinion for a rare cancer diagnosis?
What is primary peritoneal carcinoma (PPC)?
Ready to Discuss Your Case?
Every cancer journey is different. I offer a detailed, unhurried consultation to help you understand your options and make informed decisions.