Rodrigo Arrangoiz MS, MD, FACS, FSSO

Rodrigo Arrangoiz MS, MD, FACS, FSSO Assistant Professor at the Columbia University Division of Surgical Oncology at Mount Sinai Medical Center

Surgical Excellence / Excelencia Quirúrgica

In 1984 Göran Åkerström, on the basis of 503 necropsies, analysed the location of the parathyroid glands: Together with ...
07/24/2025

In 1984 Göran Åkerström, on the basis of 503 necropsies, analysed the location of the parathyroid glands: Together with the work of Gilmour (n=478) and Wang (n=160), they form the foundations of our current knowledge on the subject Dr. Juan M. Rangone modified the diagrams from Åkerström's original publication to come up with the percentages of location of the "normodescended" parathyroid glands: A. Percentages of the different locations of the superior parathyroid glands: 80% corresponds to the midglandular variant 12% to the cricopharyngeal variant Usually located 1 cm higher than the crossing of the recurrent laryngeal nerve and the inferior thyroid artery…...

In 1984 Göran Åkerström, on the basis of 503 necropsies, analysed the location of the parathyroid glands: Together with the work of Gilmour (n=478) and Wang (n=160), they form the foundations of ou…

Primary Hyperparathyroidism (PHPT): Occurs when one (or more) of the four parathyroid glands grows into a tumor and beha...
07/24/2025

Primary Hyperparathyroidism (PHPT): Occurs when one (or more) of the four parathyroid glands grows into a tumor and behaves inappropriately by constantly making excess parathyroid hormone (PTH) The parathyroid glands grow into a tumor and produce too much parathyroid hormone (PTH): Which removes calcium from the bones In Primary Hyperparathyroidism (PHPT) the tumor (Adenoma): Has lost its control mechanism and makes large amounts of parathyroid hormone (PTH): Thus, even when the serum calcium level is high: When the normal response of the parathyroid glands should be to stop making any PTH at all: …...

Primary Hyperparathyroidism (PHPT): Occurs when one (or more) of the four parathyroid glands grows into a tumor and behaves inappropriately by constantly making excess parathyroid hormone (PTH) The…

We finally know how fast breast cancers grow in patients while they await surgery (from pathologic tumor size, not just ...
07/24/2025

We finally know how fast breast cancers grow in patients while they await surgery (from pathologic tumor size, not just imaging/exam!, & the risk of upstaging from delay. Published in Annals of Surgical Oncology at bit.ly/3TURSCw .

Bone disease, including: Osteopenia, osteoporosis, and osteitis fibrosa cystica: Is found in approximately 15% of patien...
07/24/2025

Bone disease, including: Osteopenia, osteoporosis, and osteitis fibrosa cystica: Is found in approximately 15% of patients with primary hyperparathyroidism at the time of diagnosis Increased bone turnover: As found in patients with osteitis fibrosa cystica: Can be determined by documenting: Elevated alkaline phosphatase concentration Advanced PHPT with osteitis fibrosa cystica: Now occurs in less than 5% of patients The classic manifestation of PHPT bone disease is: Osteitis fibrosa cystica: Which is characterized clinically by bone pain and radiographically by subperiosteal bone resorption It has pathognomonic radiological findings: Which are best seen on…...

Bone disease, including: Osteopenia, osteoporosis, and osteitis fibrosa cystica: Is found in approximately 15% of patients with primary hyperparathyroidism at the time of diagnosis Increased bone t…

Sestamibi characteristics: Radioactive uptake by the adenoma: Should be different from the thyroid gland Rest of the stu...
07/24/2025

Sestamibi characteristics: Radioactive uptake by the adenoma: Should be different from the thyroid gland Rest of the study should not have any abnormality Patients greater than 25 years of age No family history of: PHPT or Multiple endocrine neoplasia (MEN) Absence of goiter No history of lithium intake No history of radiation to the neck No history of diseases of the: Pancreas, adrenal gland and pituitary gland

Sestamibi characteristics: Radioactive uptake by the adenoma: Should be different from the thyroid gland Rest of the study should not have any abnormality Patients greater than 25 years of age No f…

Secondary hyperparathyroidism: Is overproduction of parathyroid hormone (PTH): Due to a nonparathyroid cause: Usually a ...
07/23/2025

Secondary hyperparathyroidism: Is overproduction of parathyroid hormone (PTH): Due to a nonparathyroid cause: Usually a result of renal failure Renal failure decreases the production of 1,25(OH)2 D3: Impairing intestinal absorption of calcium: Leading to hypocalcemia: Which increases PTH secretion by the parathyroid glands: Leading to diffuse or nodular hyperplasia Hyperphosphatemia: From decreased renal excretion also contributes to PTH secretion: The resulting calcium level is low or normal Less common causes of secondary hyperparathyroidism include: Osteomalacia Long-term lithium therapy Vitamin D deficiency Malabsorption syndromes Secondary hyperparathyroidism has beenv increasingly described following bariatric surgery: …...

Secondary hyperparathyroidism: Is overproduction of parathyroid hormone (PTH): Due to a nonparathyroid cause: Usually a result of renal failure Renal failure decreases the production of 1,25(OH)2 D…

Reeve's Cricothyroid Space: Synonym: Paralaryngingeal space Pemberton space Inter-laryngeal glandular space The lower an...
07/23/2025

Reeve's Cricothyroid Space: Synonym: Paralaryngingeal space Pemberton space Inter-laryngeal glandular space The lower and lateral retraction of the upper thyroid pole: Reveals a diamond-shaped avascular space The area is limited: Medially: By the lamina of the thyroid cartilage (superiorly) and cricoid cartilage (inferiorly): Both covered by the cricothyroid muscle Inferolaterally: The space is circumscribed by the medial border of the upper thyroid pole and the upper border of the thyroid isthmus The "roof" of the area: Is covered by 2 or 3 "bridging" blood vessels that must be controlled to access the space…...

Reeve’s Cricothyroid Space: Synonym: Paralaryngingeal space Pemberton space Inter-laryngeal glandular space The lower and lateral retraction of the upper thyroid pole: Reveals a diamond-shape…

Despite what most of the literature reports: PHPT is symptomatic in more than 95% of the cases if proper attention is pa...
07/23/2025

Despite what most of the literature reports: PHPT is symptomatic in more than 95% of the cases if proper attention is payed to the subtle symptoms and signs that this disease can produce due to the fluctuating calcium levels The “classic” pentad of: Kidney stones Painful bones Abdominal groans Psychic moans. and Fatigue overtones Are rarely seen today since the advent and general use of automated blood analyzers in the…...

Despite what most of the literature reports: PHPT is symptomatic in more than 95% of the cases if proper attention is payed to the subtle symptoms and signs that this disease can produce due t…

07/23/2025
The primary treatment for secondary hyperparathyroidism: Is medical using: Calcium supplementation Phosphate binders Vit...
07/22/2025

The primary treatment for secondary hyperparathyroidism: Is medical using: Calcium supplementation Phosphate binders Vitamin D Calcitriol Calcimimetics: Such as cinacalcet Therapy is targeted to: Reduce serum calcium and phosphate: With improvement in medical management through the advent of: Vitamin D analogs and cinacalcet: Rates of parathyroidectomy for secondary hyperparathyroidism have declined Indications for parathyroidectomy include: Failure of medical management, including: Persistent hypercalcemia Persistent hyperphosphatemia PTH less than 800 pg/mL Additionally, uncontrollable symptoms including: Intractable pruritus Skeletal pain or fractures Progressive extraskeletal calcifications Removal of the parathyroid glands in secondary hyperparathyroidism: …...

The primary treatment for secondary hyperparathyroidism: Is medical using: Calcium supplementation Phosphate binders Vitamin D Calcitriol Calcimimetics: Such as cinacalcet Therapy is targeted to: R…

Less than 30% of patients with Primary Hyperparathyroidism (PHPT) are referred for surgery: Surgery is the BEST treatmen...
07/22/2025

Less than 30% of patients with Primary Hyperparathyroidism (PHPT) are referred for surgery: Surgery is the BEST treatment and only cure for this disease: Dr. Rodrigo Arrangoiz is a board-certified surgical oncologist who subspecializes in breast cancer and head and neck cancer. Dr. Arrangoiz earned his medical degree at the Anahuac University Medical School in Mexico City, Mexico and graduated Suma Cum Laude. He completed his internship and residency in general surgery at Michigan State University, where he was named chief resident during his fifth year of residency. Dr. Arrangoiz also completed a complex surgical oncology, head and neck fellowship at the Fox Chase Cancer Center in Philadelphia and at the same time he undertook a master’s in science (Clinical Research for Health Care Professionals) at Drexel University in Philadelphia....

Less than 30% of patients with Primary Hyperparathyroidism (PHPT) are referred for surgery: Surgery is the BEST treatment and only cure for this disease: Dr. Rodrigo Arrangoiz is a board-certified …

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Who is Rodrigo Arrangoiz MS, MD, FACS? / Quien es Rodrigo Arrangoiz MD, MS, FACS


  • My name is Rodrigo Arrangoiz, I went to medical school at the Anahuac University in Mexico City, which is one of the most prestigious medical schools in Mexico:I graduated Suma Cum Laude from this medical school and was the president of the student medical council.

  • I trained in general surgery at Michigan State University where I was named chief resident during my fifth year of residency which was a great honor.

  • My complex surgical oncology fellowship which included head and neck training was performed at the Fox Chase Cancer Center in Philadelphia, Pennsylvania.

  • At the same time, I undertook a Masters in Science (Clinical Research for Health Care Professionals) at Drexel University in Philadelphia, Pennsylvania.