Date of Presentation:11/01/2021

Attending pathologist: Konstantin Shilo, MD

Presented by: Nada Shaker, MD, MSc

Prepared by: Nada Shaker, MD, MSc and Isabella M.Tynski

Organ:Lung

HISTORY:

A 75-year-old female with 50 pack-year history of smoking and a recent lung biopsy diagnosis of mucinous adenocarcinoma was scheduled for right upper lobe mass resection with mediastinal lymph node dissection. On pre-surgical evaluation, a soft tissue mass in her left posterior chest wall was noted and excisional biopsy was performed. No other sites of disease were apparent on further clinical and radiological evaluation. Her past medical history was significant for arthritis, hypertension, hypothyroidism, diabetes mellitus and ischemic CVA of the frontal lobe.

On gross examination, the resected chest wall mass measured 2.4 x 1.6 x 1.5 cm and showed firm gritty cut surfaces.

GROSS:

What is the most likely diagnosis?

  1. Metastatic Mucinous adenocarcinoma from pulmonary origin
  2. Metastatic Mucinous adenocarcinoma from colon origin
Metastatic Mucinous adenocarcinoma from pulmonary origin