PSPal Surgery

Endocrine & bariatric surgery

The thyroid, the parathyroids and the metabolic patient.

Endocrine surgery is where a careful history earns the most, because the gland is usually easy to feel and hard to interpret. Two patients with the same neck lump are managed completely differently on the strength of questions that take ninety seconds to ask.

The neck lump: three things to establish

First, is it thyroid? A thyroid swelling moves upwards on swallowing, because the gland is tethered to the larynx by the pretracheal fascia. A thyroglossal cyst moves on protruding the tongue as well. A lymph node does neither.

Second, what is the thyroid status? Ask about the symptoms rather than the diagnosis: weight change against appetite, heat or cold intolerance, palpitations, bowel frequency, tremor, sweating, mood and sleep, and in women the menstrual pattern. A patient who is losing weight while eating more is telling you something the blood test has not come back with yet.

Third, are there features that raise concern?

Features that change the pathway

  • Rapid growth over weeks, or a lump that is hard and fixed
  • Hoarseness — recurrent laryngeal nerve involvement until proven otherwise
  • Difficulty swallowing or breathing, or stridor
  • Palpable cervical lymph nodes
  • Previous neck irradiation, or a family history of thyroid cancer or MEN syndromes
  • Age under 20 or over 60, and male sex, in a solitary nodule

Calcium and the parathyroids

Hypercalcaemia is found far more often on a blood test than at the bedside, but it has a history worth asking for: thirst and polyuria, constipation, abdominal pain, renal stones, bone pain, and the vague tiredness and low mood that the old mnemonic summarises as stones, bones, abdominal moans and psychic groans. A persistently raised calcium with an inappropriately normal or raised parathyroid hormone is primary hyperparathyroidism until proven otherwise, and that is a surgical disease.

Calcium and the parathyroid has a topic of its own on this site, covering the causes of hypercalcaemia, primary hyperparathyroidism and its operation, and the hypocalcaemia that follows a thyroidectomy — along with a corrected calcium calculator and the free book.

The metabolic patient

Bariatric and metabolic surgery is assessed as a whole-patient problem, not a weight problem: the duration of obesity and what has already been tried, the comorbidities that the operation is expected to treat (type 2 diabetes, obstructive sleep apnoea, reflux, hypertension, fatty liver), eating pattern and reflux symptoms, mental health, and what the patient expects the operation to achieve. Reflux history in particular changes the operation chosen.

Cover of Metabolic and Bariatric Surgery, Endobariatrics, and AI (IntechOpen)
Peer-reviewed chapter · IntechOpen · 2026

AI-Enhanced Bariatric and Endobariatric Surgery

A review of artificial intelligence across bariatric and endoscopic weight-loss interventions, synthesising roughly 300 studies from 2018 to 2025 — what the models can already predict, and what they still cannot.

Surgical pearl

Ask every patient with a neck lump to speak a full sentence before you examine them. A hoarse voice you noticed yourself carries more weight than a patient's answer to "has your voice changed?", which is almost always no.

Clerk a patient with a neck lump

Related pages

Other topics

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